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Warning: fclose() expects parameter 1 to be resource, bool given in /www/wwwroot/www.wendadaohang.com/inc/function.php on line 2475 线性代数,第二十二题,第二张图中画蓝色横线的地方,如何知道矩阵A的两个特征值都是2呢? - 33问答网