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Question: Answered & Verified by Expert
If $A$ is a symmetric matrix, then matrix $M^{\prime} A M$ is
MathematicsMatricesJEE Main
Options:
  • A Symmetric
  • B Skew-symmetric
  • C Hermitian
  • D Skew-Hermitian
Solution:
2820 Upvotes Verified Answer
The correct answer is: Symmetric
$\left(M^{\prime} A M\right)^{\prime}=M^{\prime} A^{\prime} M=M^{\prime} A M$
$\{A$ is symmetric. Hence $M^{\prime} A M$ is a symmetric matrix).

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