Question

If a= 3 -1 5 and b= 5 3 1

2 9 3. 2 9 3
5 3 1. 3 -1 5
then which statement is true​

Answer 1

B, second choice

Explanation:

EDGE 2020

Answer 2

det(A)=-det(B)

Explanation:

We have two matrices A, and B.

Matrix B is obtained by swapping rows 1 and 3 of matrix A.

Whenever we swap rows in matrices, the determinants does not change but the sign changes.

Therefore

det(A)=-det(B)

Also no two rows of of both matrices are the same, therefore

det(A)≠0, and det(B)≠0