Casio fx9860G uTo input an identity matrix, uTo check the dimensions of a matrix, Example 2 To create a 3 ⋅ 3 identity matrix as Matrix A

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Matrix Calculations

uTo input an identity matrix [OPTN]-[MAT]-[Iden]

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

uTo 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

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