Local Convergence Analysis of an Efficient Fourth Order Weighted-Newton Method under Weak Conditions

Abstract

Local convergence analysis of a fourth order method considered by Sharma et. al in [19] for solving systems of nonlinear equations. Using conditions on derivatives upto the order five, they proved that the method is of order four. In this study using conditions only on the first derivative, we prove the convergence of the method in [19]. This way we extended the applicability of the method. Numerical example which do not satisfy earlier conditions but satisfy our conditions are presented in this study.

Keywords

• local convergence
• weighted newton method
• fréchet derivative