If A is a square matrix, then A + A' is

Question

If A is a square matrix, then A + A' is (A) unit matrix (B) null matrix (C) A (D) symmetric matrix

Tardigrade Admin · Accepted Answer

A + A' is symmetric, [∵ (A + A')' = A' + (- A')' = A' + A = A + A']

Q. If A is a square matrix, then A + A' is