在线性代数中引入线性方程的有效性

The effectiveness of introducing linear equations into linear algebra

本文从线性方程的有效性出发,利用学生中学解方程的知识,从线性方程的角度补充定义了矩阵的秩并说明可逆矩阵对应的线性方程组是每个方程都有效且不矛盾的线性方程组。

The paper starting from the validity of linear equations,using the knowledge of solving equations,from the perspective of linear equations to define the rank of matrix and explain the corresponding linear equations of invertible linear equations is that each equation are valid and not conflict.