摘要
本文建立了墓于Aermite节点的Lagrange擂值Lebesgue函数的双边一致估计式,并给出了在(-∞,∞)上Lagrange擂值对连续函数的逼近阶.这些结果改进了 K.Balazc等人的结果.
A two-sided uniformal estimate of Lebesgue function for Lagrange interpolation based on Hermite abscissas is established and a degree of approximation for continuous function on(-∞,∞)by Lagrangc interpolation is given.
出处
《中国计量学院学报》
1998年第1期10-14,共5页
Journal of China Jiliang University
基金
1980 M athematics Subject Classification(1985 Revison).41A05,41A10,41A25
This work is supported by the Natural Science Foudation of Zhejiang Province
关键词
LAGRANGE插值
逼近阶
Lagrange interpolation
Degree of approximation
