摘要
研究插值多项式对函数|x|α的逼近,选取第一类Chebyshev多项式的零点为插值结点构造所需的Lagrange插值多项式,并研究插值多项式与函数xα的逼近度,证明这样得到的逼近系数好于以往的结果.
The paper studied on the approximation to function |x|α by interpolation polynomials,constructed Lagrange interpolation polynomial with Chebyshev nodes,obtained the approximation,and proved the approximation coefficient was better than previous results
出处
《杭州师范大学学报(自然科学版)》
CAS
2012年第4期302-304,351,共4页
Journal of Hangzhou Normal University(Natural Science Edition)
基金
浙江省教育厅科研项目(20071352)