If A is a square matrix, then
A + AT is symmetric
AAT is skew - symmetric
AT + A is skew - symmetric
AT A is skew symmetric
-2
2
-4
4
The inverse of a symmetric matrix is
symmetric
skew symmetric
diagonal matrix
none of these
skew symmetric matrix
symmetric matrix
upper triangular matrix
If A and B are any two matrices that AB = 0 and A is non- singular, then_________________.
B = 0
B is singular
B is non singular
B =A
The characteristic root of the matrix are
1,3,6
1,2,4
4,5,6
2,4,6
then B is
If A and B are symmetric matrices, then matrix A+B is
Symmetric matrix
unit matrix
conjugate matrix
, then A100 is equal to
2100 A
299A
100 A
299 A
If a square matrix A is such that AAT = I = ATA, then |A| is equal to
0
± 2
3
± 1
