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Journal of Function Spaces
Volume 2015, Article ID 287253, 5 pages
Research Article

An Existence Result of Positive Solutions for Fully Second-Order Boundary Value Problems

Department of Mathematics, Northwest Normal University, Lanzhou 730070, China

Received 28 October 2015; Accepted 7 December 2015

Academic Editor: Kishin Sadarangani

Copyright © 2015 Yongxiang Li and Yaya Shang. 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.


An existence result of positive solutions is obtained for the fully second-order boundary value problem       where is continuous. The nonlinearity may be sign-changing and superlinear growth on and . Our discussion is based on the method of lower and upper solution.