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
d. \( I_{n} + A - A^{\top} \) is invertible.
二、 Linear Algebra
1. (20 points) A square matrix is called skew-symmetric if $B^T = -B$. For any square matrix A, prove that
d. \( I_{n} + A - A^{\top} \) is invertible.