<p>设矩阵A=<img alt="" width="49" height="39" style="width: 100%;height: auto;" src="https://learnfile.20230611.cn/learnAppQuestion/68/d1/68d186800dc5553759e38ae2cc92d94f.png">，B=<img alt="" width="64" height="39" style="width: 100%;height: auto;" src=" - 线性代数（经管类）(04184)