JP2007287185A - Matrix calculating device, and recording medium with matrix calculation processing program recorded thereon - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To learn an operation procedure for a determinant through a matrix calculating device for calculating matrixes. <P>SOLUTION: For example, 2×2 matrices A and B are input and multiplied by each other and then calculation expression of the input matrices and a matrix as its solution are displayed. In this case, when an arbitrary element among matrix elements of the displayed solution is specified, matrix elements in matrix calculation expression used to calculate the specified matrix element of the solution are identified and displayed, so it is easy to learn combinations of a plurality of matrix elements for calculation between matrix data in a process of computing the product of matrices. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a matrix calculation apparatus for calculating a matrix and a recording medium on which a matrix calculation processing program is recorded.

  For example, some electronic computing devices have a matrix operation function for performing an operation by inputting matrix data in addition to the usual four arithmetic operation functions.

  That is, in a conventional electronic computing device equipped with this matrix calculation function, together with the input of arbitrary matrix data consisting of a plurality of rows and columns, the operation, key operation, etc. When the determinant is completed and the execution of the calculation is instructed, the calculation by the matrix components of the respective matrix data is executed in a predetermined order, and the matrix data of the answer is calculated and displayed.

  However, in the matrix calculation function in the conventional electronic calculation device, although arithmetic processing according to an arbitrarily input determinant can be easily performed, the determinant input display is performed in the same manner as in the case of normal calculation. For example, even when this electronic computing device is used as a computing device for learning, it is possible to obtain the computation results quickly, There is a problem that it is not possible to learn in what combination and order the matrix components between the matrix data are calculated.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a matrix calculation apparatus and a recording medium on which a matrix calculation processing program is recorded that enables learning of determinant calculation procedures. .

  That is, the matrix calculation apparatus according to claim 1 of the present invention provides a display unit, a determinant input unit for inputting a matrix calculation formula, and a matrix calculation formula input by the determinant input unit to the display unit. Input formula display means to be displayed, matrix calculation means for calculating each component of the matrix of the solution of the calculation formula according to the calculation formula of the matrix input by the matrix input means, and the matrix calculation means Solution display means for displaying each component of the solution matrix together with the matrix calculation formula displayed on the display means, and solution component designation for designating any component in the solution matrix component displayed by the solution display means And display control means for identifying and displaying the matrix component in the matrix calculation expression displayed on the display means used for calculating the matrix component of the solution designated by the solution component designation means. Preparation It is characterized in.

  In such a matrix calculation device, when a matrix calculation formula is input and displayed, an operation for obtaining each component of the matrix of the solution of the calculation formula is performed according to the input matrix calculation formula. Each component of the obtained solution matrix is displayed together with the displayed matrix calculation formula. When an arbitrary component in the matrix component of the displayed solution is specified, the matrix component in the displayed matrix calculation formula used for calculating the matrix component of the specified solution is Since the identification is displayed, it is possible to easily learn which matrix component the specified matrix solution is obtained by.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing a configuration of an electronic circuit of an electronic computing device having a matrix computing function according to an embodiment of the matrix computing device of the present invention.

  This electronic computing device includes a control unit (CPU) 11 formed of a computer or the like.

  The control unit (CPU) 11 includes key input data input from the key input unit 12 and a touch pen P input via the position detection circuit 15 from the tablet 14 provided on the display screen of the liquid crystal display unit 13. In response to the touch position data, the system program stored in advance in the ROM 16 is started, or the computer control program stored in the external recording medium 20 is read by the recording medium reading unit 19 and started. Alternatively, the transmission control unit 21 activates a computer control program received from another computer terminal via a communication network, and controls the operation of each part of the circuit using the RAM 17 as a work memory.

  The control unit (CPU) 11 is connected to the key input unit 12, the liquid crystal display unit 13, the tablet 14, the position detection circuit 15, the ROM 16, the RAM 17, the recording medium reading unit 19, and the transmission control unit 21. The display unit 13 is connected via a display drive circuit 18.

  The key input unit 12 includes a data input key 12a, a “mode” key 12b, an “input” key 12c, a “setting” key 12d, an “execute” key 12e, a “graph” key 12f, and up / down / left / right cursor keys “↑”. "12g", "↓" 12h, "←" 12i, "→" 12j, and the like.

  The data input key 12a is composed of a character / symbol key group such as a numeric keypad, alphabet keys, operator keys, and function keys.

  The “mode” key 12b corresponds to a matrix mode in which arbitrary matrix data is input to perform arithmetic processing, an arithmetic mode in which arbitrary arithmetic expressions such as four arithmetic calculations are input to perform arithmetic processing, and arbitrary function expressions are input. It is operated when selecting and setting various operation modes such as a graph mode for performing a graph drawing process.

  When the matrix mode is set, a matrix stage operation mode for displaying each matrix component to be multiplied in matrix multiplication step by step, a matrix component of the solution is designated by matrix multiplication, and the basis of the solution In solution component display mode for identifying and displaying each matrix component, calculation component color display mode for identifying and displaying each matrix component added or subtracted in matrix addition or subtraction, in inverse matrix calculation Specify the matrix component of the solution and specify the inverse matrix decomposition operation mode, the matrix matrix product or sum, the difference solution to reproduce and display the operation state of the process leading to the solution step by step. The equation calculation mode of the matrix component for obtaining the variable in the fitted matrix component, the primary transformation matrix and the transformation target matrix including the variable are displayed on the graph screen, and the variable value is changed. Six matrix operation mode of the primary transformation matrix mode for performing coordinate display different primary conversion in accordance with the front and rear can be selected and set.

  The “input” key 12c is operated when determining the contents of the input data or formula in numerical input of the matrix data, calculation formula, function formula, and the like.

  The “setting” key 12d has six modes (matrix stage calculation mode / solution component display mode / calculation component color display mode / inverse matrix decomposition calculation mode / matrix component equation calculation mode / primary conversion). It is operated when selecting and setting (matrix mode).

  The “execute” key 12e is operated when starting the selected operation mode or instructing the start of calculation processing.

  The “graph” key 12f is operated to instruct drawing of a graph corresponding to the function expression input in the graph mode.

  The cursor keys “↑” 12g, “↓” 12h, “←” 12i, and “→” 12j are operated when selecting and sending the displayed data and moving the cursor C, respectively.

  The tablet 14 is provided on the display screen of the liquid crystal display unit 13 so as to generate a voltage signal corresponding to the position touched by the pen P, and the voltage signal corresponding to the touch position output from the tablet 14. Based on this, the coordinates corresponding to the display screen are detected by the position detection circuit 15, and the content of the operation is determined by the control unit (CPU) 11 in accordance with the touch position coordinates.

  The ROM 16 stores in advance system program data for managing the entire processing in the electronic circuit of the present electronic computing device, as well as the matrix stage calculation mode shown in FIGS. 2 and 3, and the solution component display shown in FIGS. Mode, calculation component color display mode shown in FIGS. 6 and 7, inverse matrix decomposition calculation mode shown in FIGS. 8 and 9, matrix component equation calculation mode shown in FIGS. 10 and 11, and FIGS. Control program data, which is subprogram data for managing various operation modes such as the primary transformation matrix mode, is also stored in advance.

  The RAM 17 includes a display data memory 17a, a matrix data memory 17b, a calculation data memory 17c, a mode data memory 17d, a count data memory 17e, a graph data memory 17f, and a work memory 17g.

  Display data to be displayed on the liquid crystal display unit 13 is stored in the display data memory 17a as bitmap pattern data.

  The matrix data memory 17b stores determinant data composed of each matrix component input in the matrix mode, matrix data of the solution, and the like.

  The calculation data memory 17c stores calculation data in the calculation mode, calculation result data, and the like.

  The mode data memory 17d stores data indicating the operation mode currently activated in the control unit (CPU) 11.

  The count data memory 17e stores various count data that is set when various operation modes are activated.

  In the graph data memory 17f, the drawing points are sequentially written as bitmap data in accordance with the coordinate data of each drawing dot point of the graph corresponding to the input function formula, and are drawn and stored as graph data.

  The work memory 17g temporarily stores data input / output by the control unit (CPU) 11 in accordance with control processing of various operation modes.

  Next, the operation of the matrix calculation function of the electronic calculation apparatus having the above configuration will be described.

(Matrix-stage operation mode)
FIG. 2 is a flowchart showing matrix-stage operation mode processing in the matrix calculation function of the electronic calculation apparatus.

  FIG. 3 is a diagram showing a display state of matrix calculation data accompanying the matrix stage calculation mode processing of the electronic computing device.

  The matrix mode is selected and set on the selection screen of the operation mode displayed on the liquid crystal display unit 13 by operating the “mode” key 12 b in the key input unit 12, and then in the matrix mode displayed on the liquid crystal display unit 13. When the matrix stage calculation mode is set by operating the “SET” key 12d on the mode selection screen, the matrix stage calculation mode process in FIG. 2 is started.

  In this matrix stage calculation mode process, each matrix component to be multiplied in matrix multiplication is displayed in stages. First, a determinant displayed on the liquid crystal display unit 13 upon activation of the matrix stage calculation mode process is displayed. In the input screen, by operating the data input key 12a, for example, as shown in FIG. 3A, an arbitrary [matrix A] × [matrix B] to be subjected to matrix multiplication is input, and the “input” key 12c When the input is confirmed by the operation, the input determinant data is stored in the matrix data memory 17b in the RAM 17 (steps S1 to S3).

  When the execution of the matrix multiplication is instructed by operating the “execute” key 12e, the matrix stage calculation mode is set based on the mode data indicating the current operation mode stored in the mode data memory 17d. It is determined that the number of components of the determinant is product-operable, and the nA counter that indicates the row component of the matrix A, the kA counter that indicates the same column component, and the row of the matrix B The count data of the nB counter designating the component and the kB counter designating the same row component are all set to “1” in the count data memory 17e (steps S4, S5 → S6 → S7).

  Then, according to the count data in each of the nA counter, the kA counter, the nB counter, and the kB counter, as shown in FIG. [5], which is the first row and first column component, is identified and displayed by inversion or color change as matrix components to be multiplied first (step S8).

  At the same time, a solution [1 × 5 = 5] of the products of the highlighted matrix components is calculated and displayed in the first row and the first column on the solution matrix indicated by the nA counter and the kB counter. At the same time, as shown in FIG. 3C, a + sign is added and displayed (steps S9 and S10).

  At this time, each count data of the kA counter and the nB counter is incremented by 1 and counted up to “2”, and the first row and first column component [1] of the matrix A and the first row and first column of the matrix B The identification display for the eye component [5] is canceled (steps S11 and S12).

  Here, the number of designated columns of the matrix A indicated by the kA counter counted up in the step S11 or the designated number of rows of the matrix B indicated by the nB counter is the number of column components of the matrix A corresponding to the determinant or the rows of the matrix B. It is determined whether or not the number of components has been exceeded. In this case, since kA = 2, nB = 2 and the matrix AB is 2 × 2 matrix data, it is determined that there is no excess, and the process returns to the processing from step S8 ( Step S13 → S8).

  Then, according to the count data in each of the nA counter, the kA counter, the nB counter, and the kB counter, as shown in FIG. [7], which is the second row and first column component of B, is identified and displayed by reversal or color change as the second matrix component to be multiplied (step S8).

  At the same time, a product solution [2 × 7 = 14] of the highlighted matrix components is calculated and [5 + 14] in the first row and the first column on the solution matrix indicated by the nA counter and the kB counter. After the kA counter and the nB counter are further counted up, the identification display for the component [2] in the first row and the second column of the matrix A and the component [7] in the second row and the first column of the matrix B is performed. Is released (steps S9 to S12).

  Then, in this case, kA = 3, nB = 3, and the matrix AB is 2 × 2 matrix data, so it is determined to be over, and the solution in the first row and first column of the solution matrix indicated by the nA counter and the kB counter is determined. The component [19] is calculated and displayed as shown in FIG. 3E (steps S13 → S14).

  Then, the count data of the kA counter and the nB counter are both reset to “1”, the count data of the kB counter (column designation value of the matrix B) is incremented by 1 and counted up to “2” (step 15, S16).

  Here, it is determined whether or not the count data of the kB counter has exceeded the number of column components “2” of the matrix B (step S17).

  In this case, since kB = 2, it is determined that it is not over, and the process returns to the processing from step S8, and according to the current counter values (nA = 1, kA = 1, nB = 1, kB = 2), As shown in FIG. 3F, this time, the identification display of the component [1] in the first row and the first column of the matrix A and the component [6] in the first row and the second column of the matrix B, which are multiplied by the third, The solution matrix of product [6] is displayed (steps S17 → S8, S9).

  Then, in step S11, by updating to nA = 1, kA = 2, nB = 2, and kB = 2, the processing from step S13 to step S8 is repeated again, and this time, the matrix to be multiplied by the fourth time. An identification display and a product [16] of the component [2] in the first row and the second column of A and the component [8] in the second row and the second column of the matrix B are calculated, and the product obtained by the third multiplication is calculated. The sum [22] with [6] is fixedly displayed in the first row and second column of the solution matrix (steps S8 to S14).

  At this point, the solution [19] in the first row and the first column in the solution matrix and the solution [22] in the first row and the second column are obtained and are in a state of being fixedly displayed. Here, the kA counter and the nB Each count data of the counter is reset to “1”, the count data of the kB counter (column indication value of the matrix B) is incremented by 1 and counted up to “3” (steps 15 and S16).

  Then, it is determined that the count data of the kB counter has exceeded the number of column components “2” of the matrix B, the count data of the kA counter and the nB counter are reset to “1” again, and the count of the kB counter is further increased. Data (column designation value of matrix B) is also reset to “1” (steps S17 → S18, S19).

  Then, the count data of the nA counter (the row instruction value of the matrix A) is incremented by 1 and counted up to “2”, and the count data “2” of the nA counter exceeds the number of row components “2” of the matrix A It is determined whether or not (steps S20 and S21).

  In this case, the count data of the nA counter is “2”, and it is determined that the number of row components “2” of the matrix A is not exceeded. Therefore, the process returns to the processing from step S8, and each current counter value ( nA = 2, kA = 1, nB = 1, kB = 1), this time, the component [3] in the second row and the first column of the matrix A and the component in the first row and the first column of the matrix B are multiplied by the fifth. The identification display of [5] and the solution matrix display of the product [15] are performed (steps S21 → S8, S9).

  Then, in step S11, by updating to nA = 2, kA = 2, nB = 2, and kB = 1, the processing from step S13 to step S8 is repeated again, and this time, the matrix to be multiplied by the sixth is obtained. An identification display and a product [28] of the component [4] of the second row and second column of A and the component [7] of the second row and first column of the matrix B are calculated, and the product obtained by the fifth multiplication is calculated. The sum [43] with [15] is fixedly displayed in the second row and first column of the solution matrix (steps S8 to S14).

  At this time, the solution [19] in the first row and the first column, the solution [22] in the first row and the second column, and the solution [43] in the second row and the first column in the solution matrix are obtained and displayed in a fixed manner. Here, the count data of the kA counter and the nB counter are both reset to “1”, the count data of the kB counter (column indication value of the matrix B) is incremented by 1 and counted up to “2”. (Step 15, S16).

  Then, it is determined that the count data of the kB counter does not exceed the column component number “2” of the matrix B, and the process returns to the process from step S8, and each current counter value (nA = 2, kA = 1, In accordance with nB = 1, kB = 2), the identification display of the component [3] of the second row and the first column of the matrix A and the component [6] of the first row and the second column of the matrix B, which are multiplied by the seventh, and its The solution matrix of product [18] is displayed (steps S17 → S8, S9).

  Then, in step S11, by updating to nA = 2, kA = 2, nB = 2, and kB = 2, the processes from step S13 to step S8 are repeated again, and this time, the matrix to be multiplied by the eighth time. An identification display and a product [32] of the component [4] in the second row and the second column of A and the component [8] in the second row and the second column of the matrix B are calculated, and as shown in FIG. The sum [50] of the product [18] obtained by the seventh multiplication is fixedly displayed in the second row and second column of the solution matrix (steps S8 to S14).

  At this point, all the solutions [19, 22, 43, 50] from the first row and first column to the second row and second column in the solution matrix are obtained and are displayed in a fixed state. , The count data of the kA counter and the nB counter are both reset to “1”, the count data of the kB counter (column indication value of the matrix B) is incremented by 1 and counted up to “3” (steps 15 and S16). ).

  Then, it is determined that the count data of the kB counter has exceeded the number of column components “2” of the matrix B, the count data of the kA counter and the nB counter are reset to “1” again, and the count of the kB counter is further increased. Data (column designation value of matrix B) is also reset to “1” (steps S17 → S18, S19).

  Then, the count data of the nA counter (row instruction value of the matrix A) is incremented by 1 and counted up to “3”, and the count data “3” of the nA counter exceeds the number of row components “2” of the matrix A. As a result of the determination, the series of matrix stage calculation processing is completed (steps S20, S21 → end).

  Therefore, according to the matrix stage calculation mode process in the matrix calculation function of the electronic calculation apparatus having the above-described configuration, for example, when a matrix A and a matrix B of 2 rows and 2 columns are input and execution of multiplication between the matrices is instructed, the matrix For each combination of each multiplication of the components of A vs. matrix B, the pair of components that are sequentially multiplied are identified and displayed in turn by inversion or color change, and each matrix solution is calculated step by step each time. Since it is displayed in the solution matrix, it is possible to easily learn in what combination and order the multiple matrix components between the matrix data are calculated in the process of calculating the matrix product .

(Matrix solution component display mode)
FIG. 4 is a flowchart showing a matrix solution component display mode process in the matrix calculation function of the electronic calculation apparatus.

  FIG. 5 is a diagram showing a display state of matrix operation data accompanying the matrix solution component display mode processing of the electronic computing device.

  The matrix mode is selected and set on the selection screen of the operation mode displayed on the liquid crystal display unit 13 by operating the “mode” key 12 b in the key input unit 12, and then in the matrix mode displayed on the liquid crystal display unit 13. When the matrix solution component display mode is set by operating the “SET” key 12d on the mode selection screen, the matrix solution component display mode process in FIG. 4 is started.

  In this matrix solution component display mode processing, when a matrix component of a solution is specified in matrix multiplication, each matrix component that is the basis of the solution is identified and displayed. First, the matrix solution component display mode processing is started. Accordingly, in the determinant input screen displayed on the liquid crystal display unit 13, by operating the data input key 12a, for example, as shown in FIG. 5A, any [matrix A] × [ Matrix B] is input and displayed (steps A 1 and A 2), and when the execution of the matrix multiplication is instructed by operating the “execute” key 12 e (step A 3), the number of components of the determinant can be multiplied. It is judged and confirmed that the calculation of [matrix A] × [matrix B], which is the input determinant, is executed (step A4 → A5).

  That is, in the case of multiplication of a matrix A having a matrix component of 2 × 2 and a matrix B, (1 row and 1 column component of matrix A × 1 row and 1 column component of matrix B) + (1 row of matrix A) 2 column components × 2 rows and 1 column components of matrix B) = 1 row and 1 column components of solution matrix, (1 row and 1 column components of matrix A × 1 row and 2 column components of matrix B) + (1 row 2 of matrix A) Column component × 2 rows and 2 columns of matrix B) = 1 row and 2 columns of solution matrix, (2 rows and 1 column of matrix A × 1 row and 1 column of matrix B) + (2 rows and 2 columns of matrix A) Component × 2 rows and 1 column component of matrix B) = 2 rows and 1 column component of solution matrix, (2 rows and 1 column component of matrix A × 1 row and 2 column component of matrix B) + (2 rows and 2 column component of matrix A) × 2 row 2 column component of matrix B) = 2 row 2 column component of solution matrix is performed. As a result, as shown in FIG. It is displayed (step A6).

  Then, as shown in FIG. 5B, among the solution components in the solution matrix displayed on the liquid crystal display unit 13, an arbitrary solution (for example, a 1-row, 1-column solution) for which the constituent components of the solution are to be known. When the component [19]) is selected with the cursor keys 12g to 12j or designated on the tablet 14 (step A7), and the confirmation operation is performed with the "input" key 12c, the designated solution component [19] is highlighted. At the same time (step A8), the matrix position mn (= 1, 1) of the designated solution component [19] is detected (step A9).

  Then, as shown in FIG. 5C, all the components [1] [2] in the m (= 1) row of the matrix A and all the components [5] [7] in the n (= 1) column of the matrix B. That is, all matrix components constituting the specified solution component are inverted and identified (steps A10 and A11).

  Here, the liquid crystal display unit 13 displays a message for allowing the user to select whether or not to perform color-coded display for each component component for which the multiplication has been performed for the component component identified and displayed. (Step A12).

  Then, when the execution of the color-coded display for each component for which the product has been executed is instructed by operating the “execute” key 12e, the number of column components Z (= 2) of the matrix A is detected, and the number depends on the number. Then, “1” is set to the color number counter C for designating a different color, and “1” is first set to the counter A (steps A12 → A13, A14, A15).

  Then, as shown in FIG. 5C, the m-row A-column component of the matrix A, in this case [1] which is the 1-row 1-column component, and the A-row n-column component of the matrix B multiplied by this In this case, [5], which is a 1-row, 1-column component, is identified and displayed in the color designated by the color number C (steps A16 and A17).

  Then, the count data of the color number counter C is incremented by 1 and updated to “2”, and then the count data of the counter A is counted up to “2” (= number of column components Z of the matrix A) (step) A18, A19 → A15).

  Then, as shown in FIG. 5C, the m-row A-column component of the matrix A, in this case, [2], which is a 1-row / 2-column component, and the A-row n-column component of the matrix B multiplied by this In this case, [7], which is a 1 × 2 component, is identified and displayed in the color designated by the updated color number C (steps A16 and A17).

  In this way, the count data of the counter A is counted up to the number of column components Z of the matrix A and becomes equal, so that the color change display for each matrix component for which the product as the basis of the designated solution has been executed is repeated. The processing ends, and the series of matrix solution component display processing ends.

  Therefore, according to the matrix solution component display mode processing in the matrix calculation function of the electronic calculation device having the above configuration, the matrix A × matrix B determinant is input, matrix multiplication is performed, and the solution matrix is displayed. When an arbitrary solution component in the solution matrix is specified and displayed in reverse video, each matrix component obtained by multiplying the matrix A and the matrix B which are constituent groups of the specified solution component is identified and displayed. In addition, the combination of matrix components for each multiplication unit is color-changed and identified and displayed, so that it is easy to know which matrix components are obtained by the multiplication of the specified matrix solution. be able to.

(Matrix operation component color display mode)
FIG. 6 is a flowchart showing matrix calculation component color display mode processing in the matrix calculation function of the electronic calculation apparatus.

  FIG. 7 is a diagram showing a display state of matrix calculation data accompanying the matrix calculation component color display mode process of the electronic calculation apparatus.

  The matrix mode is selected and set on the selection screen of the operation mode displayed on the liquid crystal display unit 13 by operating the “mode” key 12 b in the key input unit 12, and then in the matrix mode displayed on the liquid crystal display unit 13. When the matrix calculation component color display mode is set by operating the “SET” key 12d on the mode selection screen, the matrix calculation component color display mode process in FIG. 6 is started.

  In this matrix calculation component color display mode process, each matrix component added or subtracted in the addition or subtraction of the matrix is identified and displayed. First, the liquid crystal display unit is activated when the matrix calculation component color display mode process is activated. In the determinant input screen displayed in FIG. 13, any [matrix A] + [matrix B] to be added is input by operating the data input key 12a, for example, as shown in FIG. When the execution of the matrix multiplication is instructed by operating the “execute” key 12e (step B3), the mode data indicating the current operation mode stored in the mode data memory 17d is displayed. Based on this, it is determined that the matrix calculation component color display mode is set (step B4), and the calculation between the determinants A and B is performed. The input type is detected, whether or subtraction is the sum operation is determined (step B5, B6).

  Here, if it is determined that the input determinant is a sum operation according to the detected determinant operator as shown in FIG. 7A, the number of components of the determinant is It is determined and confirmed that sum operation is possible (step B6 → B7), and the number of row components X (= 2) and the number of column components Y (= 2) in the determinant are detected (steps B8 and B9). “1” is set to the color number counter C for designating a different color according to the number (step B10). First, “1” is set to each of the counter A and the counter B (steps B11 and B12).

  Then, according to the count data of the counter A and the counter B, as shown in FIG. 7B, the matrix A and the matrix B are added to the B row A column component, in this case, the 1 row 1 column component. [1] of the matrix A and [5] of the matrix B are identified and displayed by the colors designated by the color number C (= 1) (step B13).

  Then, the count data of the color number counter C is incremented by 1 and updated to “2”, and then the count data of the counter A is counted up to “2” (= number of row components X in each matrix) (step) B14, B15 → B11).

  Then, as shown in FIG. 7B, the matrix A and the matrix B are added together with the B row and A column components, in this case, the matrix A [2] and the matrix B [2]. 6] are identified and displayed in the colors designated by the color number C (= 2) (step B13).

  Then, the count data of the color number counter C is incremented by 1 and updated to “3”, and then the count data of the counter B is counted up to “2” (= number of column components Y of each matrix) ( Steps B14, B16 → B12).

  Then, as shown in FIG. 7B, the matrix A and the matrix B are added together with the B row and A column components, in this case, the matrix A [3] and the matrix B [2] 7] are identified and displayed in the colors designated by the updated color number C (= 3) (step B13).

  Then, the count data of the color number counter C is incremented by 1 and updated to “4”, and then the count data of the counter A is again counted up to “2” (= number of row components X in each matrix). (Steps B14, B15 → B11).

  Then, as shown in FIG. 7B, the matrix A and the matrix B are added together with the B row and A column components, in this case, the matrix A [4] and the matrix B [2] 8] are identified and displayed in the colors designated by the color number C (= 4) (step B13).

  In this way, the count data of the counter A and the counter B are individually counted up to the number of row components X and the number of column components Y of the matrix, respectively. The identification display repetitive processing by color change ends, and the series of matrix operation component color display processing ends.

  Therefore, according to the matrix calculation component color display mode process in the matrix calculation function of the electronic calculation device having the above-described configuration, when the determinant of the matrix A + matrix B is input and the matrix addition is performed, each matrix is added. Since each m row and n column component is identified and displayed in a different color for each added component, it is possible to easily confirm and know which component in each matrix performs the sum or difference calculation in the determinant Can do.

(Inverse matrix decomposition mode)
FIG. 8 is a flowchart showing inverse matrix decomposition operation mode processing in the matrix calculation function of the electronic calculation apparatus.

  FIG. 9 is a diagram showing a display state of matrix operation data accompanying the inverse matrix decomposition operation mode processing of the electronic computing device.

  The matrix mode is selected and set on the selection screen of the operation mode displayed on the liquid crystal display unit 13 by operating the “mode” key 12 b in the key input unit 12, and then in the matrix mode displayed on the liquid crystal display unit 13. When the inverse matrix decomposition operation mode is set by operating the “SET” key 12d on the mode selection screen, the inverse matrix decomposition operation mode processing in FIG. 8 is started.

  In the inverse matrix decomposition operation mode processing, when a matrix component of a solution is specified in the inverse matrix operation, the operation state of the process leading to the solution is reproduced step by step. First, the inverse matrix decomposition operation mode processing is performed. In the determinant input screen displayed on the liquid crystal display unit 13 in response to activation of, for example, four 2 × 2 components a (= 1), b (= 2), c (= 3), a matrix composed of d (= 4) is inputted and displayed (step C1), and when the execution of the inverse matrix for the inputted matrix is instructed by operating the “execute” key 12e (step C2). Then, an inverse matrix operation is executed according to the following equation 1, and a solution is obtained. As shown in FIG. 9A, the matrix solution is displayed on the liquid crystal display unit 13 (step C3).

1 / (ad−bc) × [d, −b] [−c, a] Equation 1
Then, it is determined and executed that the inverse matrix decomposition operation mode is set based on the mode data indicating the current operation mode stored in the mode data memory 17d (step C4), and the matrix input in the step C1 is executed. The components a, b, c and d are detected and inputted (step C5).

  Here, in the solution of the inverse matrix (see FIG. 9A) calculated and displayed in steps C1 to C3, an arbitrary solution component for which the process of the inverse matrix is desired to be specified is designated, and FIG. As shown in FIG. 4B, when the display is reversed, whether the solution component of 1 row and 1 column is designated (step C8), the solution component of 1 row and 2 columns is designated (step C18), and the solution component of 2 rows and 1 column Is determined (step C30) or whether a 2 × 2 solution component is specified (step C42).

  As shown in FIG. 9B, when it is determined that the 1-by-1 solution component of the inverse matrix solution is designated (step C8), the first operation of the “execute” key 12e is performed. Then, one procedure in the inverse matrix calculation process in which the solution component [−2] of the first row and the first column is obtained based on the original matrix components a, b, c, and d detected and input in step C5. The previous calculation state d / z (z = ad−bc) is generated, and as shown in FIG. 9 (C), it is replaced with the solution component position in the 1st row and 1st column as [4 / -2]. The display is reversed (steps C9 and C10).

  Subsequently, when the second operation of the “execute” key 12e is performed, the solution component of the first row and the first column is based on the original matrix components a, b, c, d detected and input in the step C5. D / xy (x = ad, y = bc), which is a computation state two steps before in the computation process of the inverse matrix from which [-2] is obtained, is generated, as shown in FIG. [4 / (4-6)] is replaced with the solution component position in the first row and first column and displayed in reverse video (steps C11 and C12).

  When the third operation of the “execute” key 12e is performed, the solution component [1 × 1] based on the original matrix components a, b, c, d detected and input in step C5 [ -2] is generated, d / (ad-bc), which is the operation state three steps before in the inverse matrix operation process, is generated, and this row 1 is set as [4 / (1 · 4-2 · 3)]. It is replaced with the solution component position of the column and displayed in reverse video (steps C13 and C14).

  Further, when the fourth operation of the “execute” key 12e is performed, the solution component [1 × 1] based on the original matrix components a, b, c, d detected and input in step C5 [ -2] is generated, the original 1-row 1-column component a, which is the operation state 4 steps before in the inverse matrix calculation process, is generated and replaced with the solution component position of 1-row 1-column as [1]. The display is reversed (steps C15 and C16).

  In this way, each time the “execute” key 12e is operated, the inverse matrix calculation process from which the solution component [−2] of 1 row and 1 column is obtained is displayed stepwise in reverse order. When the “execution” key 12e is finally operated in the state where the original one row and one column component a is displayed as the final step, a series of decomposition operation modes specifying the inverse matrix solution of the one row and one column The process ends (step C17 → end).

  On the other hand, when it is determined that the 1-by-2 solution component [1] of the inverse matrix solution has been designated through steps C6 and C7 (step C18), the first operation of the “execute” key 12e is performed. Then, one step before the inverse matrix calculation process in which the solution component [1] of the first row and the second column is obtained based on the original matrix components a, b, c, and d detected and input in step C5. -B / z (z = ad-bc) is generated and is replaced with [-2 / -2] at the solution component position in the first row and second column and displayed in reverse video (steps C19 and C20). ).

  Subsequently, when the second operation of the “execute” key 12e is performed, the solution component of the first row and the second column is based on the original matrix components a, b, c, and d detected and input in step C5. -B / xy (x = ad, y = bc), which is a calculation state two steps before in the inverse matrix calculation process obtained [1], is generated, and [-2 / (4-6)]. Are replaced with the solution component positions in the 1st row and 2nd column and displayed in reverse (steps C21 and C22).

  When the third operation of the “execute” key 12e is performed, the solution component [1 × 2] based on the original matrix components a, b, c, d detected and input in step C5 [ -B / (ad-bc), which is an operation state three steps before in the inverse matrix operation process obtained from [1], is generated, and the line 1 is generated as [-2 / (1 · 4-2 · 3)]. The two solution solution positions are reversed and displayed in reverse (steps C23 and C24).

  Further, when the fourth operation of the “execute” key 12e is performed, the solution component [1 × 2] based on the original matrix components a, b, c, d detected and input in step C5 [ -B, which is the calculation state four steps before the calculation process of the inverse matrix from which [1] is obtained, is generated and replaced with the solution component position of the first row and the second column as [-2] and displayed in reverse (step) C25, C26).

  Further, when the fifth operation of the “execute” key 12e is performed, the solution component [1 × 2] [based on the original matrix components a, b, c, d detected and input in step C5 [ 1] is generated, and the original 1-row / 2-column component b, which is the calculation state five steps before in the inverse matrix calculation process obtained, is generated and replaced with the solution component position of the 1-row-2 column as [2] and inverted. Is displayed (steps C27 and C28).

  In this way, every time the “execute” key 12e is operated, the inverse matrix calculation process from which the solution component [1] of 1 row and 2 columns is obtained is displayed stepwise in reverse order. When the “execution” key 12e is finally operated in the state where the original 1-row / 2-column component b is displayed as the final stage, a series of decomposition operation mode processes specifying the inverse-matrix solution of the 1-row / 2-column Is terminated (step C29 → end).

  On the other hand, when it is determined that the solution component [1.5] of 2 rows and 1 column of the inverse matrix solution is designated through the steps C6 and C7 (step C30), the first operation of the “execute” key 12e is performed. Is performed, an inverse matrix calculation process in which the solution component [1.5] of 2 rows and 1 column is obtained based on the original matrix components a, b, c, and d detected and input in step C5. -C / z (z = ad-bc), which is the calculation state one step before in FIG. 1, is generated and replaced with [-3 / -2] at the solution component position in the 2nd row and 1st column and displayed in reverse video ( Steps C31 and C32).

  Subsequently, when the second operation of the “execute” key 12e is performed, the solution component of the 2nd row and the 1st column is based on the original matrix components a, b, c, d detected and input in the step C5. -C / xy (x = ad, y = bc), which is the computation state two steps before in the computation process of the inverse matrix obtained [1.5], is generated, and [-3 / (4-6 ]] Is replaced with the solution component position in the 2nd row and 1st column and displayed in reverse (steps C33 and C34).

  When the third operation of the "execute" key 12e is performed, the solution component [2 rows and 1 column] [based on the original matrix components a, b, c and d detected and input in step C5 [ 1.5] is generated, -c / (ad-bc), which is the operation state three steps before in the inverse matrix calculation process, is generated as [-3 / (1 · 4-2 · 3)]. The solution component position in the 2nd row and the 1st column is replaced and displayed in reverse (Steps C35 and C36).

  Further, when the fourth operation of the “execute” key 12e is performed, the solution component [2 × 1] based on the original matrix components a, b, c, d detected and input in the step C5 [ -C, which is a calculation state four steps before in the inverse matrix calculation process in which 1.5] is obtained, is generated, and is replaced with the solution component position in the second row and first column as [-3] and displayed in reverse video. (Steps C37 and C38).

  Further, when the “execution” key 12e is operated for the fifth time, the solution component [2 × 1] of the 2 × 1 solution component [, based on the original matrix components a, b, c, d detected and input in the step C5 [ 1.5] is obtained, and the original 2-row 1-column component c, which is the computation state 5 steps before in the inverse matrix computation process, is generated, and is replaced with the 2-row 1-column solution component position as [3]. Are displayed in reverse (steps C39 and C40).

  In this way, every time the “execute” key 12e is operated, the inverse matrix calculation process from which the solution component [1.5] of 2 rows and 1 column is obtained is displayed stepwise in reverse order. When the “execution” key 12e is finally operated in the state where the original 2 rows and 1 column component c is displayed as the final stage, a series of decomposition operations specifying the inverse matrix solution of 2 rows and 1 column is performed. The mode processing is terminated (Step C41 → End).

  On the other hand, when it is determined that the 2 × 2 solution component [−0.5] of the inverse matrix solution has been designated through steps C6 and C7 (step C30 → C42), 1 of the “execute” key 12e. When the second operation is performed, based on the original matrix components a, b, c, and d detected and input in step C5, the inverse of the solution component [−0.5] obtained in the 2 × 2 column is obtained. A / z (z = ad−bc), which is the calculation state one step before in the matrix calculation process, is generated, and is displayed as [1 / −2] in the 2 × 2 solution component position and highlighted. (Steps C43 and C44).

  Subsequently, when the second operation of the “execute” key 12e is performed, the solution component of the 2nd row and the 2nd column is based on the original matrix components a, b, c and d detected and input in the step C5. A / xy (x = ad, y = bc), which is an operation state two steps before in the inverse matrix operation process in which [−0.5] is obtained, is generated, and [1 / (4-6) ] Is replaced with the solution component position of the 2nd row and the 2nd column and displayed in reverse video (steps C45 and C46).

  Further, when the third operation of the “execute” key 12e is performed, the solution component [2 × 2] based on the original matrix components a, b, c, d detected and input in step C5 [ A / (ad-bc), which is a calculation state three steps before the calculation process of the inverse matrix from which -0.5] is obtained, is generated as [1 / (1 · 4-2 · 3)]. It is replaced with the solution component position in row 2 column and displayed in reverse video (steps C47 and C48).

  Further, when the fourth operation of the “execute” key 12e is performed, the solution component [2 × 2] based on the original matrix components a, b, c and d detected and input in step C5 [ -0.5] is generated, the original 2-row 2-column component d, which is the operation state 4 steps before in the inverse matrix calculation process, is generated, and is replaced with the 2-row 2-column solution component position as [4]. And displayed in reverse video (steps C49 and C50).

  In this manner, every time the “execute” key 12e is operated, the inverse matrix calculation process from which the solution component [−0.5] of 2 rows and 2 columns is obtained is displayed stepwise in reverse order. However, when the “execution” key 12e is finally operated in the state where the original 2-row 2-column component d is displayed as the final stage, a series of decompositions specifying the 2-row 2-column inverse matrix solution The calculation mode process is terminated (step C51 → end).

  Therefore, according to the inverse matrix decomposition operation mode processing in the matrix calculation function of the electronic computing device having the above configuration, when the inverse matrix of the arbitrarily input matrix is calculated and the matrix of the solution is displayed, the inverse matrix When an “execution” key 12e is operated by designating an arbitrary solution component of a plurality of solution components included in the solution matrix of the key, the key of the “execution” key 12e is set at the matrix position of the designated solution component. Since the inverse matrix calculation process in which the solution component is obtained for each operation is displayed in reverse order until the matrix component at the same matrix position of the original input matrix is displayed, the inverse matrix solution is displayed. The calculation procedure for each component until it is derived can be easily learned.

(Matrix component equation calculation mode)
FIG. 10 is a flowchart showing the matrix component equation calculation mode process in the matrix calculation function of the electronic calculation apparatus.

  FIG. 11 is a diagram showing a display state of matrix operation data accompanying the equation operation mode processing of the matrix component of the electronic computing device.

  The matrix mode is selected and set on the selection screen of the operation mode displayed on the liquid crystal display unit 13 by operating the “mode” key 12 b in the key input unit 12, and then in the matrix mode displayed on the liquid crystal display unit 13. When the matrix component equation calculation mode is set by operating the “SET” key 12d on the mode selection screen, the matrix component equation calculation mode processing in FIG. 10 is started.

  In this matrix component equation operation mode processing, when a product of matrix operations, sum, or difference is specified, variables in the matrix component applied to the formula for deriving the solution are obtained. In the determinant input screen displayed on the liquid crystal display unit 13 in response to the activation of the equation calculation mode process of FIG. 11, by operating the data input key 12a, for example, as shown in FIG. A matrix composed of a (= 29), b (= 4), c (= 6), and d (= 10) is input and displayed as an arithmetic solution of a product of an arbitrary determinant (step D1). As shown in FIG. 11 (B), an operation type “×” of a determinant having the solution matrix [29, 4, 6, 10] as a solution and its [matrix A] [matrix B] If the matrix components are replaced with unknown variables a and b (step D) 2 to D4), the matrix equation corresponding to the input [matrix A] [matrix B] and the operation type “×” is displayed (step D5).

  When the “execute” key 12e is operated, it is determined and confirmed that the determinant is capable of performing an operation based on the number of components of the matrix equation (steps D6 and D7), and a solution for each matrix component is obtained. Each correspondence included in the solution matrix (see FIG. 11 (A)) input and displayed in step D1 and the matrix equation (see FIG. 11 (B)) input and displayed in steps D2 to D5 for the equation. The matrix components to be substituted are substituted, and the solutions of the unknown variables a and b intentionally replaced in the matrix equation are calculated and displayed on the liquid crystal display unit 13 as shown in FIG. 11C (step D8). , D9).

  Therefore, according to the equation calculation mode processing of the matrix component in the matrix calculation function of the electronic calculation device having the above-described configuration, the solution matrix of the calculation result of either the product, sum, or difference of the matrix is input and the solution matrix is obtained. When a matrix equation of product or sum or difference consisting of each matrix and operation type is input, and some components in the determinant are replaced with unknown variables and the “execute” key 12e is operated, a solution for each matrix component is obtained. The corresponding components in each of the matrix equation and the solution matrix are assigned to the formula for obtaining, and the unknown variables replaced with the partial matrix components are calculated and displayed. It is possible to easily learn what kind of component combination the matrix equation for doing is configured.

(Primary transformation matrix mode)
FIG. 12 is a flowchart showing a primary transformation matrix mode process in the matrix calculation function of the electronic calculation apparatus.

  FIG. 13 is a diagram showing a primary transformation matrix accompanying the primary transformation matrix mode process of the electronic computing device and its graph display state.

  The matrix mode is selected and set on the selection screen of the operation mode displayed on the liquid crystal display unit 13 by operating the “mode” key 12 b in the key input unit 12, and then in the matrix mode displayed on the liquid crystal display unit 13. When the primary transformation matrix mode is set by operating the “setting” key 12d on the mode selection screen, the primary transformation matrix mode processing in FIG. 13 is started.

  In this primary transformation matrix mode process, when the primary transformation matrix and the transformation target matrix including variables are displayed on the graph screen and the variable values are changed and input, different primary transformation coordinates are displayed before and after the change. First, when the primary transformation matrix mode process is activated, as shown in FIG. 13A, the graph mode process is activated in parallel and the graph display screen in which coordinate axes are arranged horizontally and vertically with respect to the liquid crystal display unit 13 is displayed. Is displayed (step E1).

  Then, it is determined and confirmed that the primary conversion matrix mode is set based on the mode data indicating the current operation mode stored in the mode data memory 17d (step E2), for example, as shown in FIG. The matrix input area [2 × 2] of the primary transformation matrix and the matrix input area [2 × 1] for inputting the coordinate values to be subjected to the primary transformation are displayed on the graph display screen (step E3).

  Then, an arbitrary primary transformation matrix component is input to each matrix position in the matrix input area [2 × 2] of the primary transformation matrix (step E4), and a matrix input area [2 × 1] for inputting coordinate values. ], For example, a variable is set at any matrix position and a coordinate component is input (step E5), and a confirmation operation is performed with the “input” key 12c (step E6). It is judged that the variable A is included in the area, and an input guide “A =” for the coordinate component value corresponding to the variable A is displayed (steps E7 → E8).

  Here, according to the input guide “A =” of the coordinate component value corresponding to the variable A, for example, as shown in FIG. 13B, “A = 1” is input, and all the variable values are confirmed to be input. When the determination is made (steps E8, E9), a primary conversion operation is performed on the matrix component in which coordinate values are input in accordance with the matrix component of the input primary conversion matrix (step E10).

  Then, as shown in FIG. 13C, a graph display showing the coordinate position a corresponding to the coordinate component before the primary conversion is performed on the graph display area where the coordinate axes are displayed, and the primary A graph showing the coordinate position a ′ corresponding to the coordinate component after the conversion is performed is performed (steps E11 and E12).

  Here, on the graph display screen, a message for selecting “execute revariable?” Or “specify rematrix?” Is displayed, “execute revariable?” Is selected, and the “execute” key 12e is operated. Then, returning to the processing after step E4, the same primary conversion operation corresponding to each input component after changing according to re-input of each coordinate component with respect to each matrix component and coordinate value matrix in the primary conversion matrix. Processing and graph coordinate display processing are performed (steps E13 → E4 to E12).

  When the selection message “re-matrix designation?” Displayed on the graph display screen is selected and the “execute” key 12e is operated, the process returns to the processing after step E3, and the matrix input area of the primary transformation matrix And the matrix input area for inputting coordinate values are redisplayed on the graph display screen, and the same primary conversion calculation processing and graph coordinate display processing as described above are performed according to the new primary conversion matrix and coordinate value matrix ( Steps E14 → E3-E12).

  Therefore, according to the primary transformation matrix mode process in the matrix computation function of the electronic computing device having the above-described configuration, in each input area of the primary transformation matrix displayed together with the graph display screen and the coordinate value matrix to be subjected to the primary transformation, When each matrix component of the transformation matrix and each coordinate component of the coordinate value matrix are input as arbitrary values and the “execute” key 12e is operated, the primary transformation process of the coordinate value matrix according to the primary transformation matrix is executed. At the same time, the graph coordinates of the coordinate position before the primary conversion and the coordinate position after the primary conversion are displayed. Each time a variable is included in each matrix component and a new matrix component is re-input to the variable value, a new primary transformation process and coordinate position graph display process after the variable change are performed. The state of the primary transformation before and after the change of the component at the matrix position where is set can be easily confirmed on the graph screen.

  The method described in the above embodiment, that is, the matrix stage calculation mode process shown in the flowchart of FIG. 2, the matrix solution component display mode process shown in the flowchart of FIG. 4, and the matrix calculation component color display mode shown in the flowchart of FIG. Each method such as processing, inverse matrix decomposition calculation mode processing shown in the flowchart of FIG. 8, matrix component equation calculation mode processing shown in the flowchart of FIG. 10, and primary transformation matrix mode processing shown in the flowchart of FIG. Programs stored in an external recording medium 20 such as a memory card (ROM card, RAM card, etc.), magnetic disk (floppy disk, hard disk, etc.), optical disk (CD-ROM, DVD, etc.), semiconductor memory, etc. Can be distributed. Then, the computer reads the program recorded in the external recording medium 20 by the recording medium reading unit 19, and the operations are controlled by the read program, thereby realizing the various matrix calculation functions described in the embodiment. In addition, similar processing can be executed by the method described above.

  Further, the program data for realizing each of the above methods can be transmitted on the network as a program code form, and the program data is captured by the transmission control unit 21 of the computer terminal connected to the network, The various matrix calculation functions described above can also be realized.

The block diagram which shows the structure of the electronic circuit of the electronic calculation apparatus provided with the matrix calculation function which concerns on embodiment of the matrix calculation apparatus of this invention. The flowchart which shows the matrix step calculation mode process in the matrix calculation function of the said electronic calculation apparatus. The figure which shows the display state of the matrix calculation data accompanying the matrix step calculation mode process of the said electronic computer. The flowchart which shows the matrix solution component display mode process in the matrix calculation function of the said electronic calculation apparatus. The figure which shows the display state of the matrix calculation data accompanying the matrix solution component display mode process of the said electronic computer. The flowchart which shows the matrix calculation component color display mode process in the matrix calculation function of the said electronic calculation apparatus. The figure which shows the display state of the matrix calculation data accompanying the matrix calculation component color display mode process of the said electronic calculator. The flowchart which shows the decomposition | disassembly operation mode process of the inverse matrix in the matrix calculation function of the said electronic calculation apparatus. The figure which shows the display state of the matrix calculation data accompanying the decomposition | disassembly calculation mode process of the inverse matrix of the said electronic calculator. The flowchart which shows the equation calculation mode process of the matrix component in the matrix calculation function of the said electronic calculation apparatus. The figure which shows the display state of the matrix calculation data accompanying the equation calculation mode process of the matrix component of the said electronic calculator. The flowchart which shows the primary transformation matrix mode process in the matrix calculation function of the said electronic calculation apparatus. The figure which shows the primary transformation matrix accompanying the primary transformation matrix mode process of the said electronic computer, and its graph display state.

Explanation of symbols

11: Control unit (CPU),
12 ... Key input part,
12a: Data input key,
12b ... "Mode" key,
12c ... "Enter" key,
12d ... “Setting” key,
12e ... "Execute" key,
12f ... "Graph" key,
12g-12j ... cursor keys,
13 ... Liquid crystal display,
14 ... Tablet,
15 ... position detection circuit,
16 ... ROM,
17 ... RAM,
17a: display data memory,
17b ... Matrix data memory,
17c: calculation data memory,
17d ... mode data memory,
17e ... count data memory,
17f ... Graph data memory,
17g ... Work data memory,
18 ... display drive circuit,
19 ... a recording medium reading unit,
20 ... an external recording medium,
21 ... Transmission control unit.

Claims (2)

Display means;
A determinant input means for inputting a matrix formula;
Input formula display means for displaying on the display means the calculation formula of the matrix input by the determinant input means;
In accordance with the matrix calculation formula input by the matrix input means, matrix calculation means for calculating each component of the matrix of the solution of the calculation formula;
Solution display means for displaying each component of the solution matrix obtained by the matrix calculation means together with the matrix calculation expression displayed on the display means;
Solution component designating means for designating an arbitrary component of the matrix components of the solution displayed by the solution display means;
Display control means for identifying and displaying a matrix component in the matrix calculation expression displayed on the display means used for calculating the matrix component of the solution designated by the solution component designation means;
A matrix calculation apparatus comprising: A recording medium recording a matrix calculation processing program for controlling a computer, wherein the computer is
A determinant input means for inputting a matrix formula,
Input formula display means for displaying on the display device a calculation formula of the matrix input by the determinant input means;
In accordance with a matrix calculation formula input by the matrix input means, matrix calculation means for calculating each component of the matrix of the solution of the calculation formula,
Solution display means for displaying each component of the solution matrix obtained by the matrix calculation means together with a matrix calculation expression displayed on the display device;
Solution component designating means for designating an arbitrary component of the matrix components of the solution displayed by the solution display means;
Display control means for identifying and displaying matrix components in the matrix calculation formula displayed on the display device used to calculate the matrix components of the solution designated by the solution component designation means;
A computer-readable recording medium on which a computer-readable matrix calculation processing program is recorded.

Images