If A = [aij]mxn is a square matrix if
m < n
m > n
m = n
None of these
If 3 × + 2y = 1 and 2× - y = 0, where 1 and 0 are unit and null matrices of order 3, then
X = 1/7, y = 2/7
X = 2/7, y = 1/7
X = 1/7 I, y = 2/7 I
X= 2/7 I, Y = 1/7 I
The value of x for which the matrix product equals an identity matrix is _______.
½
1/3
¼
1/5
-2
4
2
-4
For any 2 x 2 matrix A, if A ( Adj A ) = then |A| = ______.
0
10
20
100
If matrix contain 13 elements. Write the possible order of the matrix
2 × 3
13 × 2
1 × 13
6× 2
A2 + B2
A2 + B2 + 2AB
A2 + B2 + AB - BA
A2 + B2 + AB + BA