关于几个重要积分的计算方法  

Computational methods for some important integration

作　　者：杨春雨[1] 姜德龙[1] 李彦文[1] 

机构地区：[1]吉林化工学院数学系,吉林吉林132022

出　　处：《吉林化工学院学报》2004年第2期95-96,共2页Journal of Jilin Institute of Chemical Technology

摘　　要：阐述了用数值分析的方法计算几个工程上常见的重要积分,在每小区间上用简单函数代替复杂函数,得到该积分的近似值,使其产生的截断误差小于ε,对不能解析求解的积分问题提供了新的方法.Numerical methods for some important integration are illustrated.In every small interval,the approximate values of the integration are obtained by replacing the complex function with simple function,so the truncation error is less than ε.It provides a new method for the problems that the integration can't be solved with analytical method.

关 键 词：数值积分 近似计算 截断误差 

分 类 号：O241.83[理学—计算数学]