Casio fx-9750G Matrix Calculations - Manual (Page 17)

107
Example 1 To add the following two matrices (Matrix A + Matrix B) :
A =
1 1
B =
2 3
2 1 2 1
1 (Mat) aA+
1 (Mat) aB
w
This display indicates the following result.
A + B =
3 4
4 2
Example 2 To multiply the two matrices in Example 1 (Matrix A
×
Matrix B)
1 (Mat) aA*
1 (Mat) aB
w
This display indicates the following result.
A
×
B =
4 4
6 7
• The two matrices must have the same dimensions in order to be added or sub-
tracted. An error (Dim ERROR) occurs if you try to add or subtract matrices of
different dimensions.
• For multiplication, the number of columns in Matrix 1 must match the number of
rows in Matrix 2. Otherwise, an error (Dim ERROR) occurs.
• You can use an identity matrix in place of Matrix 1 or Matrix 2 in the matrix
arithmetic format. Use the matrix command menu’s Identity ( 1 ) command to
input the identity matrix.
1 2 3 4 5 6
1 2 3 4 5 6
Matrix Calculations
6 - 4