1. 执行加减法条件: m == n
2.Way to multiply matrixs.



> A * B != B * A
3.Identity matrix [Red matrix] 单位矩阵

单位矩阵:矩阵相乘后保持不变
4.矩阵的逆 Matrix inverse

More pics about it : Google search matrix inverse
by-nc-sa
> A * B != B * A
More pics about it : Google search matrix inverse
by-nc-sa