If \( A \) and \( B \) both are symmetric, then \( A B-B A \) is \(...

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If \( A \) and \( B \) both are symmetric, then \( A B-B A \) is
\( \mathrm{P} \)
(1) symmetric matrix
W
(2) skew symmetric matrix
(3) both symmetric and skew symmetric
(4) neither symmetric nor skew symmetric
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