Casio CFX9850GBPLUS User Manual page 136

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