Casio CFX-9850GB PLUS, Руководство пользователя

Страница: 136 / 600

20070201
u
Determinant
[OPTN] - [MAT] - [Det]
Example Obtain the determinant for the following matrix :
Matrix A =
1 2 3
4 5 6
−1 −2 0
K
2
(MAT)
3
(Det)
1
(Mat)
av
(A)
w
u
Matrix Transposition
[OPTN] - [MAT] - [Trn]
A matrix is transposed when its rows become columns and its columns become rows.
Example To transpose the following matrix :
Matrix A =
1 2
3 4
5 6
K
2
(MAT)
4
(Trn)
1
(Mat)
av
(A)
w
2-8-18
Matrix Calculations
# 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
×
2 matrix is
calculated as shown below.
# The determinant of a 3
×
3 matrix is calculated
as shown below.
| A | =
a
11
a
12
= a
11
a
22
– a
12
a
21
a
21
a
22
= a
11
a
22
a
33
+ a
12
a
23
a
31
+ a
13
a
21
a
32
– a
11
a
23
a
32
– a
12
a
21
a
33
– a
13
a
22
a
31
a
11
a
12
a
13
a
21
a
22
a
23
a
31
a
32
a
33
| A | =