中文说明：该代码用于计算线性方程组，只需要需要增广矩阵即可。列主元Gauss消去法有效地解决了由于相对较小引起的误差放大现象，具有较高的精度。通过编写通用的列主元消去法子程序大大提高了解题效率，调用时只要根据要求解的方程组输入相应的增广矩阵即可
English Description：
The code is used to calculate linear equations, just need to expand the matrix. The column principal component Gauss elimination method effectively solves the error amplification caused by relatively small error, and has high accuracy. By writing a general subroutine of column principal component elimination method, the efficiency of solving the problem is greatly improved. When calling, only input the corresponding augmented matrix according to the required equations