After performing the procedure under “Inputting Matrix Values with the 9Keyboard”, perform the following operation.
value “5” to the element at row 1 column 2 in “mat1”, which produces the matrix
You can recall the value of any element of a MATRIX variable. When the data
1 2
3 4 is assigned to matrix “mat1”, for example, you can recall the element located at row 2, column 1.
You can also assign a value to any element in a matrix. For example, you could assign the 1 5 3 4
2-6-2
Matrix and Vector Calculations
kMatrix Variable Element Operations

.

uClassPad Operation

(1)Recall the value in row 2, column 1 of MATRIX variable “mat1”.

0matb9[c,b]w

↑ ↑

Row Column

(2)Assign “5” to the element at row 1, column 2 of MATRIX variable “mat1”. fW0matb9[b,c]w�

Tip

•You can also perform the above operations on the “ans” variable (page 2-2-2) when it contains MATRIX data.

Example: [[b,c][d,e]]w

 

1

2

 

 

3

4

D[c,b]w

3

 

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