Mathematical Problems in Engineering
Volume 2017, Article ID 9237932, 5 pages
https://doi.org/10.1155/2017/9237932
Research Article
Sharp Refinements for the Inverse Sine Function Related to Shafer-Fink’s Inequality
Department of Mathematics and Computer Sciences, “Dunărea de Jos” University of Galaţi, 111 Domnească Street, 800201 Galaţi, Romania
Correspondence should be addressed to Gabriel Bercu; or.lagu@ucrebg
Received 9 April 2017; Accepted 2 July 2017; Published 2 August 2017
Academic Editor: Kishin Sadarangani
Copyright © 2017 Gabriel Bercu. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The aim of our work is to give new sharp refinements of Shafer-Fink’s inequality, using suitable changes of variables.