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Author:
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Year:
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Issue:
High Order Derivative Rational Interpolation Algorithm With Heredity
Pages:
913
-
919
Year:
2014
Issue:
8
Journal:
Applied Mathematics and Mechanics
Keyword:
osculatory rational interpolation
;
Newton interpolation
;
piecewise combination
;
heredity
;
high order derivative
;
Abstract:
切触有理插值是函数逼近的一个重要内容,而降低切触有理插值的次数和解决切触有理插值函数的存在性是有理插值的一个重要问题.切触有理插值函数的算法大都是基于连分式进行的,其算法可行性是有条件的,且计算量较大.利用Newton(牛顿)多项式插值的承袭性和分段组合的方法,构造出了一种无极点且满足高阶导数插值条件的切触有理插值函数,并推广到向量值切触有理插值情形;既解决了切触有理插值函数存在性问题,又降低了切触有理插值函数的次数.最后给出误差估计,并通过数值实例说明该算法具有承袭性、计算量低、便于编程等特点.
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