Department of Mathematics, Faculty of Arts and Sciences, Gaziosmanpaşa University, 60240 Tokat, Turkey
Academic Editor: Patricia J. Y. Wong
Copyright © 2009 Ercan Tunç. 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 sufficient conditions so that all solutions of differential equations ,
, are nonoscillatory. Depending on these criteria, some results which exist in the relevant
literature are generalized. Furthermore, the conditions given for the functions and lead to studying more general differential equations.