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Computers & Mathematics with Applications
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Computers & Mathematics with Applications
Article . 1991
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Computers & Mathematics with Applications
Article . 1991 . Peer-reviewed
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Selective solutions to transcendental equations

Authors: Nasser Doual; Rémi Vaillancourt; James Lucien Howland;

Selective solutions to transcendental equations

Abstract

The authors present a combination of global iterative methods, based on the Fatou-Julia theory, and local methods to find selected roots of elementary transcendental equations, \(z=F(z,c)\), \(z\) and \(c\) complex, that occur in different applications. Suitable starting values for the iteration function, \(z_{n+1}=F(z_ n,c)\), and appropriate regions for the determination of the inverse iteration function, \(z_{n+1}=F^{- 1}(z_ n,c)\), are given. Convergence criteria are derived. Certain fixed points of \(F\) can be reached quickly by means of a local method, like Newton's method. It is shown that Newton's method leads to attractive cycles or to unpredictable roots when the starting values are near the Fatou-Julia set.

Keywords

global iterative methods, inverse iteration, fixed points, unpredictable roots, roots of elementary transcendental equations, Computational Mathematics, General theory of numerical methods in complex analysis (potential theory, etc.), Newton's method, attractive cycles, Computational Theory and Mathematics, Zeros of polynomials, rational functions, and other analytic functions of one complex variable (e.g., zeros of functions with bounded Dirichlet integral), Modelling and Simulation, Fatou-Julia set, Numerical computation of solutions to single equations, Convergence, Fatou-Julia theory

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citations
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!
2
Average
Average
Average
hybrid