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
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