Refined forms of Oppenheim and Cusa-Huygens type inequalities

  • Yogesh J. Bagul K. K. M. College
  • Christophe Chesneau University of Caen-Normandie
Keywords: Cusa-Huygens inequality, trigonometric-polynomial bounds, hyperbolic version, monotonicity, Yang's inequality

Abstract

We rene Oppenheim's inequality as well as generalized Cusa-Huygens type inequalities established recently by some researchers. One of the results where the bounds of sin x / x are tractable will be used to obtain a sharp version of Yang's inequality.

Author Biography

Yogesh J. Bagul, K. K. M. College

Department of Mathematics

Published
2020-12-31
Section
Articles