对称矩阵一定有<img class=jc-formula data-tex=n src=https://huaweicloudobs.ahjxjy.cn/6593C84B94B8062EB35F270378D7D9B6.png style=vertical-align: middle;/>个不同的特征值.

【判断题】【消耗次数：1】

① 正确

② 错误

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