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CUET · MATHS · PYQ PAPER 2025

Let \(A\) be any square matrix of order 3 and \(B=\left[\begin{array}{ccc}0 & -4 & 2 \\ 4 & 0 & 3 \\ -2 & -3 & 0\end{array}\right]\).Then the matrix \(A B A^T\) is a:

  1. A Symmetric matrix
  2. B Skew-symmetric matrix
  3. C Null matrix
  4. D Diagonal matrix
Verified Solution

Answer & Solution

Correct Answer

(B) Skew-symmetric matrix

Step-by-step Solution

Detailed explanation

\(B=\left[\begin{array}{ccc}0 & -4 & 2 \\ 4 & 0 & 3 \\ -2 & -3 & 0\end{array}\right]\) \(B^T=\left[\begin{array}{ccc}0 & 4 & -2 \\ -4 & 0 & -3 \\ 2 & 3 & 0\end{array}\right] = -B\) \(B\) is a skew-symmetric matrix. Let \(C = A B A^T\).…