If the matrix AB is zero, then _________.
A = 0 or B = 0
A = 0 and B = 0
It is not necessary that either A = 0 or B should be 0
All the above statements are wrong
A matrix is _______.
A collection of real numbers
A collection of real or complex numbers
An array of real numbers
An array of real or complex numbers
If matrics A B = 0.
It is not necessary that A = 0 or B = 0
Above statements are wrong
If matrix contain 13 elements. Write the possible order of the matrix
2 × 3
13 × 2
1 × 13
6× 2
then the values of x, y, z, w are ________.
2, 2, 3, 4
2, 3, 1, 2
3, 3, 0, 1
None of these
If A is a squre matrix, then A - A' is _____________.
Unit matrix
Null matrix
A
Skew symmetric matrix
A square matrix A is singular if _______
| A | ≠ 0
| A | = 0
| A | = 1
| A | ≠1
If A and B are matrices such that A + B and AB are defined, then.
It is not necessary that A and B are of the same size.
A and B are square matrices of the same order
No. of columns in A = no. of rows in B
If A is 3 x 4 matrix and B is a matrix such that A'B and B A' are both defined.Then B is of the type.
4 x 3
3 x 4
3 x 3
4 x 4