Improving order and efficiency: Composition with a modified Newton's method

  • Authors:
  • Miquel Grau-Sánchez

  • Affiliations:
  • Technical University of Catalonia, Department of Applied Mathematics II, Jordi Girona 1-3, Building Omega, Room 435, 08034 Barcelona, Spain

  • Venue:
  • Journal of Computational and Applied Mathematics
  • Year:
  • 2009

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Abstract

In this paper a zero-finding technique for solving nonlinear equations more efficiently than they usually are with traditional iterative methods in which the order of convergence is improved is presented. The key idea in deriving this procedure is to compose a given iterative method with a modified Newton's method that introduces just one evaluation of the function. To carry out this procedure some classical methods with different orders of convergence are used to obtain new methods that can be generalized in Banach spaces.