几个简单的计算线性方程系数矩阵分解的算法，包括cholesky、doolittle、等-The calculation of a few simple linear equations coefficient matrix factorization algorithms, including cholesky, doolittle, etc.

数值分析中用matlab做的Doolittle分解，guass-Jordan分解，和guass列主元分解程序-Numerical analysis