Question

Let A and B are the non-singular square matrices, then which of the following is always correct?

(A) (AB)^θ = A^θB^θ

(B) (AB)′ = B′A′

(C) A(adjB) = B(adj A)

(D) |adj A| = |A|^n-2

Answer 1

Answer is (B) (AB)′ = B′A′

If A and B are the non-singular matrices, then (AB)' = B'A'