本题采用的计算方法为：主要用Jacobi迭代和Gauss-Seidel迭代解线性方程组。

Jacobi迭代算法思路：由方程组 ，使等式左端仅保留向量 ，其他一概放到右端，将 代入上式右端，便可（按顺序逐行）进行计算得到 。

Gauss-Seidel迭代和Jacobi迭代不同的是先计算第一式得到 ,用此数再参与第二式的右端的计算,依次类推。

-that the use of the method of calculating : main Jacobi iteration and the Gauss - Seidel iterative solution of linear equations. Jacobi iterative algorithm ideas : equations, so that the equation extreme retain only vector, into subguadratic else. will be incorporated into the on-subguadratic can (in order Progressive) calculated. Gauss - Seidel iterative and Jacobi iteration is different-first to be calculated first, used again in the second for the right side of the ceremony, followed by analogy.