Casio CFX-9850G PLUS, User'S Manual & Technical Reference

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• The two matrices must have the same dimensions in order to be added or
subtracted. An 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 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 command (
1
)
to input the identity matrix.
Example 3 To multiply Matrix A (from Example 1) by a 2
×
2 identity matrix
1
(Mat)
a A*
6
(
g
)
1
(Iden)
c w
Number of rows and columns.
k k
k k
k
Matrix Scalar Multiplication
The following is the format for calculating a matrix scalar multiplication, which
multiplies the value in each cell of the matrix by the same value.
Scalar value Matrix
Mat A
k
w
Mat Z
MatAns
Example Calculate the product of the following matrix using a multiplier
value of 4 :
Matrix A =
1 2
3 4
e 1
(Mat)
a A w
k k
k k
k
Determinant
Matrix
Mat A
3
(Det)
w
Mat Z
MatAns
Matrix Calculations
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