If \( \mathrm{A} \) is a square matrix \( \mathrm{A}+\mathrm{A}^{\m...

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If \( \mathrm{A} \) is a square matrix \( \mathrm{A}+\mathrm{A}^{\mathrm{T}} \) is symmetric matrix, then \( \mathrm{A}-\mathrm{A}^{\mathrm{T}}= \)
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(1) Unit matrix
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(2) Symmetric matrix
(3) Skew symmetric matrix
(4) Zero matrix
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