摘要
从插值型数值微分的矩阵形式出发,通过分析拉格朗日插值多项式中w(x)的特性,推导出等距节点条件下插值型数值微分的几个性质,应用这些性质可以快速得到低阶插值型数值微分公式。
From the matrix form of interpolation numerical differentiation, by analyzing the characteristics of w （x） of Lagrange interpolation polynomial, several interpolation numerical differential properties under the condition of equidistant nodes are derived. These properties could be used to get low order interpolation numerical differential formula quickly.
出处
《电脑与电信》
2009年第4期49-51,54,共4页
Computer & Telecommunication
关键词
数值微分
插值
微分公式
numerical differential
interpolation
differential formula
