• 2022-06-01
    中国大学MOOC: 设方阵 https://img0.ph.126.net/1bAST5d1_tYOVJJWSGdxsQ==/6631517465957090493.png 满足 https://img1.ph.126.net/pR8wpqMcxHNo-tqdJD-DDw==/6631707681468959020.png 则当 https://img1.ph.126.net/LjW2K88B13RJ0meuDqyjnQ==/6631442699164335961.png 且 https://img2.ph.126.net/_ZhUuji0JTtXfQFwpPZiaQ==/6631672497096864257.png 时, https://img2.ph.126.net/CsbJhk6qM0-Id0IBYnW_Vg==/6631572441538728716.png 是可逆矩阵.