自己编写的全主元高斯消去法解线性方程组的matlab函数。特点：运行稳定，适合于工程计算；结构清楚，注释详尽，非常适合于初学者。-their preparation of all PCA Gaussian elimination method for solving linear equations of Matlab function. Features : stable operation, which is suitable for engineering calculations; Structure clear, detailed notes, which is very suitable for beginners.