20021201
(3) Tap
8
, and then input the values for the second matrix.
2-6-5
Matrix and Vector Calculations
Example 3:
To multiply the matrix
1 2
by 5
3 4
u
ClassPad Operation
(1) Perform the key operation below in the Main application work area.
9
[[b,c][d,e]]*f
(2) Tap
w
.
(4) Tap
w
.
Tip
• Note that when adding or subtracting two matrices, they both must have the same number of
rows and the same number of columns (the same dimensions). An error occurs (Invalid Dimen-
sion Error) when the two matrices have different dimensions.
• When multiplying two matrices, the number of columns in the matrix to the left of the multiplica-
tion sign (
×
) must be the same as the number of rows in the matrix to the right of the multiplica-
tion sign. An error occurs (Invalid Dimension Error) when you attempt to multiply two matrices
that do not satisfy the above conditions.
