设A*,A^分别为n阶方阵A的伴随阵和逆矩阵,则|A*A^|=
举一反三
- 设，为n阶方阵的伴随阵、逆矩阵，则（ )https://image.zhihuishu.com/zhs/onlineexam/ueditor/201909/9642423ef3774c65b6e247e2ce40b223.png
- 1.设是n阶方阵的伴随矩阵，若,则=( )7a9ba1a92fe9272f6a8f8300950896d9.gifa1a1e44fcd83c75aa0904d8ed7f07468.gif702c10e9ab83d706954a0b3bcd0d565b.gif97c1fcad5f3686ed462d25c709c04e0c.gif
- 2.设是n()阶可逆方阵的伴随矩阵，若,则( )7a9ba1a92fe9272f6a8f8300950896d9.gif9e1a4b63efd87a8f203e447b2088e397.gifa1a1e44fcd83c75aa0904d8ed7f07468.giff3482920e4c8d70274192d1831f6d025.gif32217e1e7386dc1503de942caa297094.gif
- 设A与B分别为阶m与n阶的可逆阵,C为m×n矩阵,求证分块矩阵的逆矩阵为
- 阶方阵、，E为n阶单位阵，A 逆矩阵存在的充要条件为（ ）cc5c90e9dddb74844a9b8b804352bcc5.png2b15a89b59e3e0944d5cff6f15c931ed.png588aadc1b78ad19f9149685feb6d563f.png