摘要
考虑Newman型有理算子逼近|x|的收敛速度,结点组X取正切结点组{tan(kπ)/(4n)}k=1 n,得到准确的逼近阶为O(1/(nlnn)).
The rate of convergence that Newman-type rational operator approximates to ｜x｜ is discussed based on the nodes of tangent,and it is proved that in this case the exact order of approximation is O（1/（nlnn））.
出处
《天津师范大学学报（自然科学版）》
CAS
北大核心
2011年第4期5-6,共2页
Journal of Tianjin Normal University：Natural Science Edition
关键词
正切结点组
有理插值
Newman型有理算子
逼近阶
nodes of tangent
rational interpolation
Newman-type rational operator
order of approximation
