Casio CFX-9970G Manuel - Page 16

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Casio CFX-9970G Manuel
6 - 4
Matrix Calculations
Example
• Determinants can be obtained only for square matrices (same number of rows
and columns). Trying to obtain a determinant for a matrix that is not square
produces an error.
• The determinant of a 2
• The determinant of a 3
k k k k k Matrix Transposition
A matrix is transposed when its rows become columns and its columns become
rows. The following is the format for matrix transposition.
Example
Obtain the determinant for the following matrix :
Matrix A =
3(Det)1(Mat)aAw
a
a
11
| A | =
a
a
21
a
a
11
| A | =
a
a
21
a
a
31
= a
a
a
11
22
33
– a
Matrix
Mat A
4 (Trn)
Mat Z
MatAns
To transpose the following matrix :
1
Matrix A =
3
5
4(Trn)1(Mat)aAw
1
2
3
4
5
6
–1 –2
0
2 matrix is calculated as shown below.
12
= a
a
– a
a
11
22
12
21
22
3 matrix is calculated as shown below.
a
12
13
a
22
23
a
32
33
+ a
a
a
+ a
a
a
12
23
31
13
21
32
a
a
– a
a
a
– a
11
23
32
12
21
33
w
2
4
6
a
a
13
22
31
94