说明：  jaccobi迭代法和GS迭代法求解线性方程组，并有著名病态对称正定矩阵Hilbert矩阵的生成程序和其不同维数下，求解结果的对比作图
(jaccobi iteration and GS iterative method for solving linear equations, and a well-known pathological symmetric positive definite matrix Hilbert matrix formation process and the different dimension, the results of the solution Comparative mapping)