Optimal Order of One-Point and Multipoint Iteration
Journal of the ACM (JACM)
Three-step iterative methods with eighth-order convergence for solving nonlinear equations
Journal of Computational and Applied Mathematics
A family of three-point methods of optimal order for solving nonlinear equations
Journal of Computational and Applied Mathematics
New modifications of Potra-Pták's method with optimal fourth and eighth orders of convergence
Journal of Computational and Applied Mathematics
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In this paper, we present a family of optimal, in the sense of Kung---Traub's conjecture, iterative methods for solving nonlinear equations with eighth-order convergence. Our methods are based on Chun's fourth-order method. We use the Ostrowski's efficiency index and several numerical tests in order to compare the new methods with other known eighth-order ones. We also extend this comparison to the dynamical study of the different methods.