Using Technology
Casio fx-9750G PLUS Graphing Calculator
MATRIX OPERATIONS
Entering Matrices into Calculator
To Delete a Matrix: From Main Menu move cursor to MAT  and Press EXE.
Use the cursor to move to the desired matrix. Press F1 (DEL)
Confirm you want to delete the matrix. Press F1 (YES) to confirm.
To Define Dimensions: From Main Menu move cursor to MAT  and Press EXE.
Use the cursor to move to the desired matrix.
Type the number of rows then Press EXE .
Type the number of columns then Press EXE
The matrix will appear with zeros in each entry.
To Enter Matrix Values:
After defining dimensions, the matrix will be on the screen.
Type the value for the entry and Press EXE
The cursor will be on the next entry. Type the value for the entry and Press EXE
Continue until all values are entered.
Matrix Operations with Calculator
To Add, Subtract, Multiply or Divide Matrices:
From the Main Menu move cursor to RUN  and Press EXE
Press OPTN to display the option menu.
Press F2 (MAT) then Press F1 (MAT). “MAT _” with a flashing cursor will appear.
Enter the matrix name by pressing ALPHA A (or B, C, . . .)
Press the operation you want + (could also use - ,  ,  , exp, …)
Enter the next matrix name by Pressing F1 (MAT) ALPHA B (or A, C, . . .)
Press EXE to add (or subtract, multiply, . . .) the matrices
To Multiply by a Scalar:
From the Main Menu move cursor to RUN  and Press EXE
Type the scalar (example: 4 )
Press OPTN to display the option menu.
Press F2 (MAT) then Press F1 (MAT). “MAT _” with a flashing cursor will appear.
Enter the matrix name by pressing ALPHA A (or B, C, . . .)
Press EXE to multiply the matrix by the scalar
Find the Determinant of Matrix “C”
From the Main Menu move cursor to RUN  and Press EXE
Press OPTN to display the option menu.
Press F2 (MAT) then Press F3 (DET). “DET _” with a flashing cursor will appear.
Enter the matrix name by pressing F1 ALPHA A (or B, C, . . .)
Press EXE to find the determinant
Find the Inverse of Matrix “C”
From the Main Menu move cursor to RUN  and Press EXE
Press OPTN to display the option menu.
Press F2 (MAT)
Enter the matrix name by pressing F1 ALPHA A (or B, C, . . .)
Press SHIFT x 1 EXE to find the inverse