Gauss_Seidel法解方程组,对同一系数矩阵的方程组，只须变换一次系数矩阵，即可求不同常数向量的不同方程组，大大提高计算效率，且可求解任意元线形方程组-Gauss_Seidel Solving equations, the same coefficient matrix equations, only a transformation coefficient matrix can be different for the different constant vector equation