Casio FX-9860GII-L-IH User Guide - Page 129
To input an identity matrix, To check the dimensions of a matrix, which was input
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2-8-12 Matrix Calculations u To input an identity matrix Use the Identity command to create an identity matrix. Example 2 To create a 3 × 3 identity matrix as Matrix A K2(MAT)6(g)1(Iden) da6(g)1(Mat)av(A)w Number of rows/columns [OPTN]-[MAT]-[Iden] u To check the dimensions of a matrix [OPTN]-[MAT]-[Dim] Use the Dim command to check the dimensions of an existing matrix. Example 3 To check the dimensions of Matrix A, which was input in Example 1 K2(MAT)6(g)2(Dim) 6(g)1(Mat)av(A)w The display shows that Matrix A consists of two rows and three columns. Since the result of the Dim command is list type data, it is stored in ListAns memory. You can also use {Dim} to specify the dimensions of the matrix Example 4 To specify dimensions of 2 rows and 3 columns for Matrix B !*( ͕ )c,d!/( ͖ )a K2(MAT)6(g)2(Dim) 6(g)1(Mat)al(B)w 200509401