matrix basics
order of 5x6 matrix
30
add[ 6 1 and matrix [3 0
1 7 ] 2 1]
[9 1
3 8]
Determinant of | 2 5
1 4|
3
inverse of [ 1 0
0 1]
[ 1 0
0 1]
[3 0
0 9]
diagonal matrix
2 5
7 3
2
3
A+O
A
[1 0
0 1]
1
if determinant is 0, will it has inverse?
no
AT= -A
SKEW SYMMETRIC
identity matrix of order 3
1 0 0
0 1 0
0 0 1
A+A
2A
determinant of singular matrix
zero
if det(A) is non zero, then it will have inverse or not?
yes, it has inverse
det(A)=0
SINGULAR MATRIX
no. of columns in 9x13 matrix
13
A-A
ZERO MATRIX
[1 2 3
4 5 6
7 8 9]
0
inverse of | 1 2
3 4|
|-2 1
1.5 -0.5|
AT=A
Symmetric matrix
number of rows and columns in square matrix
equal
K [ 1 7
8 9]
[ K 7K
8K 9K]
IF THE DETERMINANT OF
A MATRIX IS 0, WHAT DOES THAT TELL U ABOUT MATRIX
singular
inverse of | 4 7
2 6|
-0.2 0.4]
AXI=IXA=A
Identity matrix