If A and B are square matrices of the same order, then Trace(A + B) is equal to:

If A and B are square matrices of the same order, then Trace(A + B) is equal to:

• A. Trace(A) × Trace(B)
• B. Trace(A) + Trace(B)
• C. Trace(AB)
• D. Trace(A) − Trace(B)

Answer: B) Trace(A) + Trace(B)

Explanation: The trace operator is linear. The sum of the diagonal elements of A + B is simply the sum of the diagonals of A plus the sum of the diagonals of B.