Reduced Row Echelon Form; Matrix Inversion - Casio FX-7400GII - SOFTWARE VERSION 2-00 User Manual

Software version 2.00
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Row Echelon Form
This command uses the Gaussian elimination algorithm to find the row echelon form of a
matrix.
Example
To find the row echelon form of the following matrix:
Matrix A =
( )

Reduced Row Echelon Form

This command finds the reduced row echelon form of a matrix.
Example
To find the reduced row echelon form of the following matrix:
Matrix A =
( )
• The row echelon form and reduced row echelon form operation may not produce accurate
results due to dropped digits.

Matrix Inversion

Example
To invert the following matrix:
Matrix A =
(MAT)
(Trn)
(Mat)
(A)
1
1
2
2
3
3
4
4
5
5
6
6
(MAT)
( )
(Ref)
(Mat)
(A)
2
2
−1
−1
3
3
1
1
1
1
−5
−5
−21
−21
0
0
4
4
3
3
(MAT)
( )
(Rref)
(Mat)
(A)
1
1
2
2
3
3
4
4
(MAT)
(Mat)
x
–1
(A)
(
)
2-46
19
19
0
0
[OPTN]-[MAT]-[Ref]
[OPTN]-[MAT]-[Rref]
x
–1
[
]

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