Casio FX-9860GII-L-IH User Guide - Page 136
Matrix Inversion, Squaring a Matrix, OPTN], Example, To invert the following matrix, Matrix
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2-8-19 Matrix Calculations u Matrix Inversion Example To invert the following matrix : 12 Matrix A = 34 K2(MAT)1(Mat) av(A)!) (x-1) w [OPTN]-[MAT]-[x -1] u Squaring a Matrix Example To square the following matrix : 12 Matrix A = 34 K2(MAT)1(Mat)av(A)xw [OPTN]-[MAT]-[x 2] # Only square matrices (same number of rows and columns) can be inverted. Trying to invert a matrix that is not square produces an error. # A matrix with a determinant of zero cannot be inverted. Trying to invert a matrix with determinant of zero produces an error. # Calculation precision is affected for matrices whose determinant is near zero. # A matrix being inverted must satisfy the conditions shown below. A A-1 = A-1 A = E = 1 0 0 1 The following shows the formula used to invert Matrix A into inverse matrix A-1. A = A-1= a b c d 1 ad - bc d -b -c a Note that ad - bc 0. G 20050401