Step & Key Operation
2-1 Enter a 3 x 3 matrix B.
2nd F 
MATRIX 
B 
2 
3 
ENTER 
3 
ENTER
1 
ENTER 
2 
ENTER 
1 
ENTER
2 
ENTER 
1 
ENTER 
1 
ENTER
1 
ENTER 
1 
ENTER 
2 
ENTER
2nd F |
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| CL |
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2nd F |
| MATRIX |
| A | 2nd F |
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(repeatedly)
2nd F 
MATRIX 
B 
3 
3 
ENTER 
1 
ENTER
8 
ENTER 
1 
ENTER 
3 
ENTER
3-2 Calculate B-1C.
CL 
2nd F 
MATRIX 
A 
2
2nd F 
X 
2nd F 
MATRIX 
A 
3 
ENTER
2nd F 
OPTION
C
2 
ENTER
2nd F 
QUIT
DisplayNotes
Some square matrices have no inverse and will generate error statements when calcu- lating the inverse.
| - 0.17 | 0.83 | - 0.5 | |
0.5 - 0.5 | 0.5 | |||
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| 0.17 | 0.17 | - 0.5 |
The system of equations can be expressed as
| 1 | 2 | 1 |
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2 | 1 |
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1 | 1 |
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Let each matrix B, X, C : BX = C
I=
The 1 is the x coordinate, the 2 the y coordinate, and the 3 the z coordinate of the solution point.
(x, y, z)=(1, 2, 3)
The calculator can execute calculation of inverse matrix and matrix multiplication. A system of linear equations can be solved easily using the Matrix feature.
