95
k
k
k
k
k
Matrix Inversion
Matrix
Mat A
!X
w
Mat Z
MatAns
Example
To invert the following matrix :
Matrix A =
1
2
3
4
1
(Mat)
a
A
!Xw
• Only square matrices (same number of rows and columns) can be inverted.
Trying to invert a matrix that is not square produces an error.
• A matrix with a value of zero cannot be inverted. Trying to invert a matrix with
value of zero produces an error.
• Calculation precision is affected for matrices whose value is near zero.
• A matrix being inverted must satisfy the conditions shown below.
A A
–1
= A
–1
A = E =
1
0
0
1
• The following shows the formula used to invert Matrix A into inverse matrix
A
–1
.
A =
a
b
c
d
A
–1
=
1
d –b
ad – bc
–c
a
Note that ad – bc
G
0.
Matrix Calculations
6 - 4
Summary of Contents for CFX-9970G
Page 22: ... CFX 9970G ...
Page 452: ...435 1 2 3 4 5 Program for Circle and Tangents No 4 Step Key Operation Display ...
Page 453: ...436 Program for Circle and Tangents No 4 Step Key Operation Display 6 7 8 9 10 ...
Page 454: ...437 11 12 13 14 15 Program for Circle and Tangents No 4 Step Key Operation Display ...
Page 455: ...438 16 17 18 Program for Circle and Tangents No 4 Step Key Operation Display ...
Page 458: ...441 1 2 3 4 5 Program for Rotating a Figure No 5 Step Key Operation Display ...