Solving nonsmooth equations using family of derivative-free optimal methods

Document Type : Original Article

Authors

1 Department of Mathematics, Faculty of Science and Arts, Najran University, Najran 1988, Saudi Arabia

2 Department of Mathematics, Faculty of Science, Minia University, Minia 61111, Egypt

http://dx.doi.org/10.1016/j.joems.2012.10.007

Abstract

In this paper, a family of derivative-free of third and fourth order convergent methods
for solving nonlinear equations is suggested. In the proposed methods, several linear combinations
of divided differences are used in order to get a good estimation of the derivative of the given function
at the different steps of the iteration. The efficiency indices of the members of this family are
equal to 1.442 and 1.587. The convergence and error analysis are given. Numerical comparisons are
made with other existing methods to show the performance of the presented methods.

Keywords