数值分析中几个基础的matlab程序，包括选主元的高斯消去，矩阵的LU分解以及Jacobi迭代

.通过MATLAB软件写出用逐次超松弛迭代法解线性方程组的程序并运行结果。(MATLAB software is used to write the program for solving linear equations by successive over relaxation iteration method and its running results)