On interpolation variants of Newton’s method for functions of several variables |
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Authors: | A. Cordero Juan R. Torregrosa |
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Affiliation: | Instituto de Matemática Multidisciplinar, Universidad Politécnica de Valencia, Camino de Vera, s/n, 46022 Valencia, Spain |
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Abstract: | A generalization of the variants of Newton’s method based on interpolation rules of quadrature is obtained, in order to solve systems of nonlinear equations. Under certain conditions, convergence order is proved to be 2d+1, where d is the order of the partial derivatives needed to be zero in the solution. Moreover, different numerical tests confirm the theoretical results and allow us to compare these variants with Newton’s classical method, whose convergence order is d+1 under the same conditions. |
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Keywords: | Nonlinear systems Newton&rsquo s method Fixed point iteration Convergence order |
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