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<p>设 A、B都是n阶可逆矩阵，则<img alt="" src="https://learnfile.20230611.c
分类: 数学2 (军队文职)
发布时间: 2023-11-03 09:29
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设 A、B都是n阶可逆矩阵，则
A.A
B.B
C.C
D.D
正确答案是D
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