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提问人:网友cuiying2044
发布时间:2022-01-07
[单选题]
设A是n阶方阵,满足
设A是n阶方阵,满足
为n阶单位矩阵,且有|A|<0,则|a+e|=________<br>
A.0
B.1
C.-1
D.2
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