Some new bounds for ratio functions of trigonometric and hyperbolic functions - Archive ouverte HAL
Pré-Publication, Document De Travail Année : 2018

Some new bounds for ratio functions of trigonometric and hyperbolic functions

Résumé

This paper is devoted to obtain sharp bounds for the ratio functions cos(x)/cosh(x) and sin(x)/sinh(x) . The proofs are based on the use of a refinement of a special case of the Bernoulli inequality (which can be of independent interest) and infinite products.
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Dates et versions

hal-01940170 , version 1 (30-11-2018)
hal-01940170 , version 2 (11-05-2019)

Identifiants

  • HAL Id : hal-01940170 , version 1

Citer

Christophe Chesneau, Yogesh J. Bagul. Some new bounds for ratio functions of trigonometric and hyperbolic functions. 2018. ⟨hal-01940170v1⟩
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