A Comparative Study on Numerical Solutions of Initial Value Problems (IVP) for Ordinary Differential Equations (ODE) with Euler and Runge Kutta Methods

• 作者: Md. Amirul Islam
• 来源期刊: 美国计算数学期刊(英文)
• 学科: 数学
• 关键词: Initial Value Problem (IVP) EULER METHOD Runge Kutta METHOD Error Analysis
• 年，卷（期）: mgjssxqkyw_2015,（3）
• 页码范围: 393-404
• 页数: 12页
• 分类号: O1

摘要

This paper mainly presents Euler method and fourth-order Runge Kutta Method (RK4) for solving initial value problems (IVP) for ordinary differential equations (ODE). The two proposed methods are quite efficient and practically well suited for solving these problems. In order to verify the ac-curacy, we compare numerical solutions with the exact solutions. The numerical solutions are in good agreement with the exact solutions. Numerical comparisons between Euler method and Runge Kutta method have been presented. Also we compare the performance and the computational effort of such methods. In order to achieve higher accuracy in the solution, the step size needs to be very small. Finally we investigate and compute the errors of the two proposed methods for different step sizes to examine superiority. Several numerical examples are given to demonstrate the reliability and efficiency.