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
A matrix A = ( aij ) m × n over the field of conmplex numbers is said to be be a reactangular matrix of ___________.
m = n
m ≠ n
m/n = 1
m - n = 0
A column matrix has only ____________.
One element
One row with one or more columns
One column with one or more rows
One row and one column
then the values of x, y, z, w are ________.
2, 2, 3, 4
2, 3, 1, 2
3, 3, 0, 1
None of these
A square matrix A is singular if _______
| A | ≠ 0
| A | = 0
| A | = 1
| A | ≠1
A 3×4 matrix whose elements are
, then A2 is equal to
Unit matrix
Null matrix
A
-A
The number of all possible matrices of order 3 × 3 with each entry 0 or 1 is
27
18
81
512
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
