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  4. If A and B are two 3 × 3 symmetric matrix such that X = AB - BA then operatornamedet( X ) is equal to

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Q. If $A$ and $B$ are two $3 \times 3$ symmetric matrix such that $X = AB - BA$ then $\operatorname{det}( X )$ is equal to

Matrices

Solution:

Correct answer is (a) 0