以下结论中哪一个是正确的（）？ -题库考试答案搜索网

以下结论中哪一个是正确的（）？

单选题

2022-05-22 09:11

A、若方阵A的行列式｜A｜=0，则A=0
B、若A<sup>2</sup>=0，则A=0
C、若A为对称阵，则A<sup>2</sup>也是对称阵
D、D.对任意的同阶方阵A、B有（A+（A-B.=A<sup>2</sup>-B<sup>2</sup>

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正确答案

C

试题解析

标签： CMS专题注册一级结构工程师公共基础知识

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