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Pré-Publication, Document De Travail Année : 2018

Some New Simple Inequalities Involving Exponential, Trigonometric and Hyperbolic Functions

Résumé

The prime goal of this paper is to establish sharp lower and upper bounds for useful functions such as the exponential functions, with a focus on exp(−x^2), the trigonometric functions (cosine and sine) and the hyperbolic functions (cosine and sine). The bounds obtained for hyperbolic cosine are very sharp. New proofs, refinements as well as new results are offered. Some graphical and numerical results illustrate the findings.
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Dates et versions

hal-01930521 , version 1 (22-11-2018)
hal-01930521 , version 2 (22-12-2018)

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  • HAL Id : hal-01930521 , version 2

Citer

Yogesh J. Bagul, Christophe Chesneau. Some New Simple Inequalities Involving Exponential, Trigonometric and Hyperbolic Functions. 2018. ⟨hal-01930521v2⟩
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