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Advances in Numerical Analysis
Article . 2014 . Peer-reviewed
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Advances in Numerical Analysis
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Article . 2014
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A Method to Accelerate the Convergence of the Secant Algorithm

A method to accelerate the convergence of the secant algorithm
Authors: Marco J. P. Nijmeijer;

A Method to Accelerate the Convergence of the Secant Algorithm

Abstract

We present an acceleration technique for the Secant method. The Secant method is a root-searching algorithm for a general function f. We exploit the fact that the combination of two Secant steps leads to an improved, so-called first-order approximant of the root. The original Secant algorithm can be modified to a first-order accelerated algorithm which generates a sequence of first-order approximants. This process can be repeated: two nth order approximants can be combined in a (n+1)th order approximant and the algorithm can be modified to an (n+1)th order accelerated algorithm which generates a sequence of such approximants. We show that the sequence of nth order approximants converges to the root with the same order as methods using polynomial fits of f of degree n.

Keywords

Numerical computation of solutions to single equations

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
4
Average
Top 10%
Average
gold