Critical study of a nonlinear numerical scheme for initial value problems.

S. Qureshi; A. A. Shaikh; M. S. Chandio

Author(s)

S. Qureshi Department of Basic Sciences & Related Studies, Mehran University of Engineering &Technology, Jamshoro, Pakistan

A. A. Shaikh Department of Basic Sciences & Related Studies, Mehran University of Engineering &Technology, Jamshoro, Pakistan

M. S. Chandio Institute of Mathematics and Computer Science (IMCS), University of Sindh, Jamshoro, Pakistan

Abstract

The present paper aims at analyzing a nonlinear explicit one-step method to find numerical solutions of initial value problems (IVPs) in ordinary differential equations (ODEs). Analysis of the proposed method asserts that the method is second order accurate with Astability based upon (1 1,) − Padé approximation to the exponential function z E , contradicting claim of method’s developer about the method to have first order accuracy. Present study also discusses essential characteristics of the method that are observed to be missing in the original findings. Error analysis carried out also affirms second order accuracy of the method. Numerical results of some continuous mechanical and physical systems have been compared with both exact solutions (if possible) and solutions obtained from past methods in order to ascertain effectiveness of the method particularly with regard to order of accuracy.

Publication Details

Page(s) 693-698

DOI DOI not available

Published Journal: Sindh University Research Journal, Volume: 47, Issue: 4, Year: 2015

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References

Qureshi S.,Shaikh A. A.,Chandio M. S. .2015 .Critical study of a nonlinear numerical scheme for initial value problems. , 47(4) : .