Sharpness of Wilker and Huygens type inequalities

被引：24

作者：

Chen, Chao-Ping ^{[1
]}

Cheung, Wing-Sum ^{[2
]}

机构：

[1] Henan Polytech Univ, Sch Math & Informat, Jiaozuo City 454003, Henan Province, Peoples R China

[2] Univ Hong Kong, Dept Math, Hong Kong, Hong Kong, Peoples R China

来源：

JOURNAL OF INEQUALITIES AND APPLICATIONS | 2012年

关键词：

inequalities; trigonometric functions; CUSA-HUYGENS;

D O I：

10.1186/1029-242X-2012-72

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

摘要：

We present an elementary proof of Wilker's inequality involving trigonometric functions, and establish sharp Wilker and Huygens type inequalities. : 26D05.

引用

页数：11

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