【判断题】【消耗次数：1】
矩阵<img src=https://huaweicloudobs.ahjxjy.cn/A725E2490A10D4420644E3CF340922AD.png title=3.png alt=3.png/>不是正交矩阵。
①
正确
②
错误
参考答案：
复制
纠错
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