数学季刊 ›› 2004, Vol. 19 ›› Issue (4): 399-400.

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一个不等式的注记

  

  1. College of Mathematics and Information Science, Henan University, Kaifeng 475001, China
  • 收稿日期:2003-11-20 出版日期:2004-12-30 发布日期:2024-03-06
  • 作者简介:ZHANG Zhi-ping(1962-),male,native of Lankao,Henan,an associate professor of Henan University,M.S.D.,engages in nonlinear analysis.
  • 基金资助:
     SupportedbytheEducationCommissionofHenanProvince;

A Note for one of Inequality

  1. College of Mathematics and Information Science, Henan University, Kaifeng 475001, China
  • Received:2003-11-20 Online:2004-12-30 Published:2024-03-06
  • About author:ZHANG Zhi-ping(1962-),male,native of Lankao,Henan,an associate professor of Henan University,M.S.D.,engages in nonlinear analysis.
  • Supported by:
     SupportedbytheEducationCommissionofHenanProvince;

摘要: In this paper, we find the largest contant C such that sin2 x + xtanx > 2x2 + cx5tan x 0<x<2/π.

关键词: Maclaurin ,  ,  ,  ,  , expansions, Bernoulli's ,  ,  ,  ,  , numbers

Abstract: In this paper, we find the largest contant C such that sin2 x + xtanx > 2x2 + cx5tan x 0<x<2/π.

Key words: Maclaurin ,  ,  ,  ,  , expansions, Bernoulli's ,  ,  ,  ,  , numbers

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