Casio CLASSPAD 330 3.04 - Manual (Page 151)

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I Matrix Variable Element Operations
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
value “5” to the element at row 1 column 2 in “mat1”, which produces the matrix
1 5
3 4
.
After performing the procedure under “Inputting Matrix Values with the  Keyboard”,
perform the following operation.
S ClassPad Operation
(1) Recall the value in row 2, column 1 of MATRIX variable “mat1”.
K?R@:A @;U
l l
Row Column
2-6-2
Matrix and Vector Calculations
(2) Assign “5” to the element at row 1, column 2 of MATRIX variable “mat1”.
D6K?R@:@ A;U_
Tip
• You can also perform the above operations on the “ans” variable (page 2-2-2) when it contains
MATRIX data.
Example: ::@ A;:B C;;U
1 2
3 4
#:A @;U 3