Journal of Inequalities and Applications 
Volume 2006 (2006), Article ID 29828, 6 pages
doi:10.1155/JIA/2006/29828

On some Turán-type inequalities

A. Laforgia and P. Natalini

 Department of Mathematics, Roma Tre University, Largo San Leonardo Murialdo, Rome 100146, Italy
Received 14 September 2005; Accepted 20 September 2005

Abstract

We prove Turán-type inequalities for some special functions by using a generalization of the Schwarz inequality.