对于阶数不高的方程组，直接法非常有效，对于阶数高，而系数矩阵稀疏的线性方程组却存在着困难，在这类矩阵中，非零元素较少，若用直接法求解，就要存贮大量零元素。为减少运算量、节约内存，使用迭代法更有利。-The order of the equations is not high, the direct method is very effective for high order, and the sparse coefficient matrix of linear equations, ther

GMRES算法，求解大型稀疏线性方程的快速数值解法，方便实时求解-GMRES algorithm is prosed to solve Large- scale sparse linear equations

全选主元高斯-约当消去法求解稀疏线性方程组 输入参数a[]系数矩阵，n线性方程阶数，b[]右端项 输出参数b[]方程组的解 返回值 ： 1求解成功 0求解失败-Select the main element Gauss- Jordan elimination method for solving sparse linear equations Input parameters a [] coefficient matrix, n order linear equations, b

求解大型稀疏线性方程和线性最小二乘问题的LSQR算法(The software for lsqrSOL is provided by SOL, Stanford University under the terms of the OSI Common Public License (CPL))