求解五对角和九对角线性方程组的追赶法  

The Solution of Penta-diagonal and Ninefold-diagonal Linear Equations by Thomas Method

作　　者：续小磊[1] 马丁[1] 

机构地区：[1]宁夏大学数学计算机学院,宁夏银川750021

出　　处：《长江大学学报（自科版）（上旬）》2013年第9期5-9,4,共5页JOURNAL OF YANGTZE UNIVERSITY (NATURAL SCIENCE EDITION) SCI ＆ ENG

摘　　要：利用追赶法求解三对角线性方程组的思想,推导出求解五对角和九对角线性方程组的追赶法。此方法不必选主元、计算量小、存储量小、避免了中间结果数量级的巨大增长和舍入误差的严重积累、运算速度快而且Matlab程序编写也较为简单。The solution of penta-diagonal and ninefold-diagonal linear equations is obtained by chasing method.Both computational and storage capacity are minor.The huge increasing scale of middle results and the serious accumulation of roundings errors are avoided.Main elements are not choosed.

关 键 词：追赶法 稀疏矩阵 五对角矩阵 九对角矩阵 

分 类 号：O241.6[理学—计算数学]