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An Iterative Solver in the Presence and Absence of Multiplicity for Nonlinear Equations

机译:非线性方程存在和不存在多重性的迭代求解器

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We develop a high-order fixed point type method to approximate a multiple root. By using three functional evaluations per full cycle, a new class of fourth-order methods for this purpose is suggested and established. The methods from the class require the knowledge of the multiplicity. We also present a method in the absence of multiplicity for nonlinear equations. In order to attest the efficiency of the obtained methods, we employ numerical comparisons alongside obtaining basins of attraction to compare them in the complex plane according to their convergence speed and chaotic behavior.
机译:我们开发了一份高阶定点类型方法,以近似多根root。通过每个全周期使用三个功能评估,建议并建立了一类新的四阶方法。来自课程的方法需要多个知识。我们还介绍了非线性方程没有多重的方法。为了证明所获得的方法的效率,我们携带数值比较,获得吸引力的盆地,以根据其收敛速度和混沌行为将它们与复杂平面进行比较。

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