Further Acceleration of the Simpson method for solving nonlinear equations

  • Rajinder Thukral Padé Research Centre, 39 Deanswood Hill, Leeds, West Yorkshire, LS17 5JS
Keywords: Simpson method, Newton method, Simple root, Nonlinear equation, Root-finding, Order of convergence.


There are two aims of this paper, firstly, we present an improvement of the classical Simpson third-order method for finding zeros a nonlinear equation and secondly, we introduce a new formula for approximating second-order derivative. The new Simpson-type method is shown to converge of the order four.  Per iteration the new method requires same amount of evaluations of the function and therefore the new method has an efficiency index better than the classical Simpson method.  We examine the effectiveness of the new fourth-order Simpson-type method by approximating the simple root of a given nonlinear equation. Numerical comparisons is made with classical Simpson method to show the performance of the presented method.


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