ExamBro
ExamBro
CUET · MATHS · PYQ PAPER 2025

If A and B are symmetric matrices of the same order, then

  1. A (AB+BA) is skew symmetric matrix.
  2. B (AB+BA) is always a diagonal matrix.
  3. C (AB+BA) is a symmetric matrix.
  4. D (AB-BA) is a symmetric matrix.
Verified Solution

Answer & Solution

Correct Answer

(C) (AB+BA) is a symmetric matrix.

Step-by-step Solution

Detailed explanation

Given \( A^T = A \) and \( B^T = B \) \( (AB+BA)^T = (AB)^T + (BA)^T \) \( = B^T A^T + A^T B^T \) \( = BA + AB \) \( = AB + BA \) Thus, \( (AB+BA)^T = AB+BA \) (AB+BA) is a symmetric matrix.
From CUET
Explore more questions on app