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Generalized Wilker-type inequalities with two parameters

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成果类型:
期刊论文
作者:
Chu, Hong-Hu;Yang, Zhen-Hang;Chu, Yu-Ming*;Zhang, Wen
通讯作者:
Chu, Yu-Ming
作者机构:
[Chu, Hong-Hu] Changsha Univ Sci & Technol, Sch Civil Engn & Architecture, Changsha 410114, Hunan, Peoples R China.
[Chu, Yu-Ming; Yang, Zhen-Hang] Hunan City Univ, Sch Math & Computat Sci, Yiyang 413000, Peoples R China.
[Zhang, Wen] Yeshiva Univ, Albert Einstein Coll Med, New York, NY 10033 USA.
通讯机构:
[Chu, Yu-Ming] H
Hunan City Univ, Sch Math & Computat Sci, Yiyang 413000, Peoples R China.
语种:
英文
关键词:
Wilker inequality;trigonometric function;Bernoulli number;monotonicity
期刊:
JOURNAL OF INEQUALITIES AND APPLICATIONS
ISSN:
1029-242X
年:
2016
卷:
2016
期:
1
页码:
1-13
基金类别:
Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [11371125, 61374086, 11401191]; Natural Science Foundation of Zhejiang ProvinceNatural Science Foundation of Zhejiang Province [LY13A010004]
机构署名:
本校为通讯机构
院系归属:
理学院
摘要:
In the article, we present certain $p, q\in\mathbb{R}$ such that the Wilker-type inequalities $$\begin{aligned}& \frac{2q}{p+2q} \biggl(\frac{\sin x}{x} \biggr)^{p}+ \frac{p}{p+2q} \biggl(\frac{\tan x}{x} \biggr)^{q}>(< )1\quad \mbox{and}\\& \biggl(\frac{\pi}{2} \biggr)^{p} \biggl(\frac{\sin x}{x} \biggr)^{p}+ \biggl[1- \biggl(\frac{\pi}{2} \biggr)^{p} \biggr] \biggl(\frac{\tan x}{x} \biggr)^{q}>(< )1 \end{aligned}$$ hold for all $x\in(0, \pi/2)$ .

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