If is a symmetric matrix, then

Maths Matrices and Determinants Telangana & AP CET Previous Year Question Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 13, 2026

-121

143

-143

Text Solution

Verified by Experts

The correct answer is:

Given matrix is and it is symmetric matrix.
Let
So,

Compare the above matrices.

Then,
Expand w.r.t. .

Therefore, the value of determinant is -143 .

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