Department of Mathematics, Zhejiang Gongshang University, Hangzhou, Zhejiang 310018, China
Copyright © 2009 Wenhai Pan and Ling Zhu. 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.
We give some
generalizations of Shafer-Fink inequalities, and prove these inequalities by
using a basic differential method and l'Hospital's rule for monotonicity.