设<img class=jc-formula data-tex={ A }^{ * } src=https://huaweicloudobs.ahjxjy.cn/9018D88AD10C0611187281FB224EFA8E.png style=vertical-align: middle;/>是n阶方阵A的伴随矩阵,若|A|=0,则<img class=jc-formula data-tex=\left| { A }^{ * } \right| src=https://huaweicloudobs.ahjxjy.cn/411604C9B575913898C108A4444C31FF.png style=vertical-align: middle;/>=0