<p>证明：<img alt="" width="119" height="61" style="width: 100%;height: auto;" src="https://learnfile.20230611.cn/learnAppQuestion/0f/59/0f59dfc6583f2445253431ca7d62da79.png"><img alt="" width="72" height="61" src="https://learnfile.20230611.cn/learnApp - 线性代数（经管类）(04184)