数值分析的上机作业，有三个文件，可以实现1、LU分解法；2、高斯消去法和高斯行主元消去法；3、雅克比迭代法和高斯迭代法。去求解矩阵方程~-Numerical Analysis of the machine operation, there are three files, you can achieve 1, LU decomposition　2, Gaussian elimination and Gauss-line principal component elimination method　3, Jacobi iteration and Gauss iterative method. To solve the matrix equation ~