2-6-5

Matrix and Vector Calculations

(3)Tap 8, and then input the values for the second matrix.(4)Tap w.
Example 3: To multiply the matrix

 

1

2

 

by 5

 

3

4

 

 

 

 

uClassPad Operation

(1)Perform the key operation below in the Main application work area.

9[[b,c][d,e]]*f(2)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 Dimension Error) when the two matrices have different dimensions.

When multiplying two matrices, the number of columns in the matrix to the left of the multiplication sign () must be the same as the number of rows in the matrix to the right of the multiplication sign. An error occurs (Invalid Dimension Error) when you attempt to multiply two matrices that do not satisfy the above conditions.

Multiplication is assumed if you do not include any operator between two matrices. [[1, 2] [3, 4]] [[2, 2] [2, 2]] for example, is treated as [[1, 2] [3, 4]] × [[2, 2] [2, 2]].

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