Analysis Mathematica

, Volume 41, Issue 1–2, pp 3–15 | Cite as

On certain old and new trigonometric and hyperbolic inequalities

  • Barkat Ali Bhayo
  • József Sándor


In this paper we study two-sided inequalities of trigonometric and hyperbolic functions.


Hyperbolic Function Jordan Type Circular Case Hadamard Inequality Optimal Inequality 
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O некоторых старых и новых тригонометрических и гиперболических неравенствах


В этой статье мы изучаем двусторонние неравенства для тригонометрических и гиперболических функций.


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Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2015

Authors and Affiliations

  1. 1.Department of Mathematical Information TechnologyUniversity of JyväskyläJyväskyläFinland
  2. 2.Department of MathematicsBabeş-Bolyai UniversityCluj-NapocaRomania

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