題組內容
二、 Linear Algebra
1. (20 points) A square matrix is called skew-symmetric if $B^T = -B$. For any square matrix A, prove that
a. \( A - A^{\top} \) is skew-symmetric.
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二、 Linear Algebra
1. (20 points) A square matrix is called skew-symmetric if $B^T = -B$. For any square matrix A, prove that
a. \( A - A^{\top} \) is skew-symmetric.