第一步matlab求矩阵的特征值和特征向量是用eig函数,可以在命令行窗口中输入help eig,看一下eig函数用法
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/0b46f21fbe096b636628cfc31e338744ebf8ac74?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
第二步进去matlab命令行窗口,输入x=[3 6 3;7 4 8;6 8 7],创建一个3行3列的矩阵
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/b7003af33a87e9509d2662ff02385343fbf2b474?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
第三步输入[m,n]=eig(x),进行求x矩阵的特征值和特征向量,其中m矩阵的每一列值都是x矩阵的特征向量,这里已经求出了x矩阵的3个特征向量
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/9213b07eca806538bedb358085dda144ad348274?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
第四步n的对角元素值是x矩阵的特征值,输入diag(n),可以获取n矩阵的对角元素值,也就是求x矩阵的特征值
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/caef76094b36acafeed1076f6ed98d1001e99c74?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
第五步按回车键之后,可以看到已经求出x矩阵的特征值了,根据需要使用
![](https://video.ask-data.xyz/img.php?b=https://iknow-pic.cdn.bcebos.com/e61190ef76c6a7ef181739b5effaaf51f3de6674?x-bce-process=image%2Fresize%2Cm_lfit%2Cw_600%2Ch_800%2Climit_1%2Fquality%2Cq_85%2Fformat%2Cf_auto)
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