J4 ›› 2010, Vol. 48 ›› Issue (03): 367-371.

• 数学 • 上一篇    下一篇

非线性常微分方程的多项式逼近

常晶1,2, 刘冬1   

  1. 1. 吉林大学 数学研究所, 长春 130012|2. 空军航空大学 飞行基础训练基地数学教研室, 长春 130022
  • 收稿日期:2009-09-09 出版日期:2010-05-26 发布日期:2010-05-19
  • 通讯作者: 常晶 E-mail:changjing81@126.com

Polynomial Approximation of a Nonlinear OrdinaryDifferential Equation

CHANG Jing1,2, LIU Dong1   

  1. 1. Institute of Mathematics, Jilin University, Changchun 130012, China;2. Teaching and Research Section of Mathematics, Aviation University of Air Force, Changchun 130022, China
  • Received:2009-09-09 Online:2010-05-26 Published:2010-05-19
  • Contact: CHANG Jing E-mail:changjing81@126.com

摘要:

应用最小二乘法得到了非线性常微分方程的多项式逼近, 将逼近的阶数提高到三阶以上, 并给出了2个数值实例, 实例证明该方法有效.

关键词: 非线性常微分方程, 最小二乘, 多项式逼近

Abstract:

The  polynomial approximation of nonlinear ordinary differential equation was obtained based on the minimization in the least square sense. The approximation is three order or higher. Finally two examples were given in order to prove the validity of the method.

Key words: nonlinear ordinary differential equation, least square, polynomial approximation

中图分类号: 

  • O175.14