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设A是s×n 矩阵(s≠n),则以下关于矩阵A的叙述正确的是( )

单选题
2021-07-17 23:20
A、ATA是s×s对称矩
B、ATA=AAT
C、(ATA)T =AAT
D、AAT是s×s对称矩阵
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正确答案
B

试题解析

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