Question

A is non zero matrix of order m×n then rank of A is​

Answer 1

Answer:

Answer is 1

Step-by-step explanation:

Since, order of matrix A is m×1

Rank of A≤min m,1

Rank of A is 1.

Since, order of matrix B is 1×n

Rank of B≤min1,n

Rank of B is 1.

Now, rank of product of matrices is not greater than rank of both matrices.

Therefore, rank of AB=1