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二元混合连分式展开的混合差商极限方法

         

摘要

For a univariate function given by its Taylor series expansion, a continued fraction expansion can be obtained with the Viscovatov's algorithm, as the limiting value of a Thiele interpolating continued fraction or by means of the determinantal formulas for inverse and reciprocal differences with coincident data points. In this paper, both Viscovatov-like algorithms and Taylor-like expansions are incorporated to yield bivariatc blending continued expansions which are computed as the limiting value of bivariate blending rational interpolants, which are constructed based on symmetric blending differences. Numerical examples are given to show the effectiveness of our methods.

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