If A is square matrix of order n and A = KB where K is a scalar, then |A| =
|B|
K |B|
K∩ |B|
∩ |B|
If A is ( aij ) m × n and B = ( bjk ) m × p, then order of AB is ___________.
m × n
m × p
p × m
If A is an orthogonal matrix, then A -1 is equal to ___________.
A
A'
A2
None of these
then the values of x, y, z, w are ________.
2, 2, 3, 4
2, 3, 1, 2
3, 3, 0, 1
A2 = A
B2 = B
AB ≠ BA
AB = BA
A2 + B2
A2 + B2 + 2AB
A2 + B2 + AB - BA
A2 + B2 + AB + BA
If A is any square matrix, then A ( adj A ) is equal to __________.
I
| A | I
0
| A | n I