设[tex=0.643x0.786]/he/ol8BkDuTTL9yMPtH4Q==[/tex]阶方阵[tex=0.786x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex]的伴随矩阵为[tex=1.143x1.071]F0wJ6Hm8K7uRqU9zt3sS4A==[/tex]，证明：(1) 当且仅当[tex=3.143x1.357]BIh93n4rr/VbrKyEAPPe8v69B6+8CnPk9OnKv8C27gc=[/tex]时，[tex=2.643x1.357]LEFM2psKbtlE4mN5F41lug==[/tex]；(2) [tex=5.357x1.5]BIh93n4rr/VbrKyEAPPe8lwNk/Hi3nckAPwcguzWmomu6um7Mzvkt1/SJRx+eUHP[/tex].

设[tex=2.143x1.214]8T1Eh15aUumBqVY2LvMcx8lXNe5mVfM0IHa+dNMr1MA=[/tex]是[tex=0.643x0.786]/he/ol8BkDuTTL9yMPtH4Q==[/tex]阶可逆矩阵，[tex=1.143x1.071]dlHppezehhhJt6WmQH9aoA==[/tex]是[tex=0.786x1.0]b4HkKtHXeHofHX/gJc8Agg==[/tex]伴随矩阵，则（    ）。 未知类型：{'options': ['[tex=5.357x1.5]BIh93n4rr/VbrKyEAPPe8lwNk/Hi3nckAPwcguzWmomu6um7Mzvkt1/SJRx+eUHP[/tex]', '[tex=4.0x1.357]BIh93n4rr/VbrKyEAPPe8kisnVkcXkp0frHW/SPFTcY=[/tex]', '[tex=4.429x1.357]BIh93n4rr/VbrKyEAPPe8sMxGQ7SUtRUpWP7htwCTDVLIJuSLxlVEEsk+yP2fk5f[/tex]', '[tex=5.214x1.571]BIh93n4rr/VbrKyEAPPe8nwKfj4A0o9eQVn2LBNd/XwQDqB1bvkfF3vDVBN4Z39v[/tex]'], 'type': 102}