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📅  最后修改于: 2022-03-11 14:56:17.733000             🧑  作者: Mango
\left[ \begin{array}{cccc|c} 1 & 0 & 3 & -1 & 0 \\ 0 & 1 & 1 & -1 & 0 \\ 0 & 0 & 0 & 0 & 0 \\ \end{array} \right]