Casio fx-5800P User Manual page 65

A Obtaining the Determinant of a Matrix
The det( function can be used to obtain the determinant of a square matrix.
a a
det =
11 11
a a
11 12
a a
det =
11 22
a a
21 22
a a a
11 12 13
a a a a
det =
21 22 23
a a a
31 32 33
Example: To obtain the determinant of the matrix
This example assumes that Mat C contains
A Transposing a Matrix
Transposing a matrix basically means to change its rows in to columns and its columns into
rows. Calculation is performed using the Trn( function as shown below.
Example: To transpose the matrix
This example assumes that Mat B contains
A Inverting a Matrix
You can use the procedure shown below to invert a square matrix.
1
–1
a
=
11 a
11
a
22
a a
–1
a
–
11 12
21
=
a a
a a
–
21 22
11 22
a a
–
12 21
a a a a a
+ +
11 22 33 12 23 31
– {MATRIX} 3 (det)
1 2 3
4 5 6
– {MATRIX} 4 (Trn)
a
–
12
a
11
a a
12 21
a a a a a a
– –
13 21 32 13 22 31
1 –2
.
5 0
1 –2
.
5 0
Mat C
.
1 2 3
.
4 5 6
Mat B
E-64
a a a a a a
–
12 21 33 11 23 32
)
)