Optimal Lehmer Mean Bounds for the Toader Mean

被引:111
作者
Chu, Yu-Ming [1 ]
Wang, Miao-Kun [1 ]
机构
[1] Huzhou Teachers Coll, Dept Math, Huzhou 313000, Zhejiang, Peoples R China
基金
中国国家自然科学基金;
关键词
Lehmer mean; Toader mean; power mean; INEQUALITIES; HOLDER;
D O I
10.1007/s00025-010-0090-9
中图分类号
O29 [应用数学];
学科分类号
070104 ;
摘要
We find the greatest value p and least value q such that the double inequality L (p) (a, b) < T(a, b) < L (q) (a, b) holds for all a, b > 0 with a not equal b, and give a new upper bound for the complete elliptic integral of the second kind. Here and L (p) (a, b) = (a (p+1) + b (p+1))/(a (p) + b (p) ) denote the Toader and p-th Lehmer means of two positive numbers a and b, respectively.
引用
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页码:223 / 229
页数:7
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