Journal of applied mathematics & informatics
- Volume 25 Issue 1_2
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- Pages.245-253
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- 2007
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- 2734-1194(pISSN)
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- 2234-8417(eISSN)
EXISTENCE OF POSITIVE SOLUTIONS OF SECOND-ORDER NONLINEAR NEUTRAL DIFFERENTIAL EQUATIONS WITH POSITIVE AND NEGATIVE TERMS
- Zhang, Zhenguo (College of Mathematics and Information of Science, Hebei Normal University) ;
- Yang, Aijun (College of Mathematics and Information of Science, Hebei Normal University) ;
- Di, Congna (College of Mathematics and Information of Science, Hebei Normal University)
- Published : 2007.09.30
Abstract
In this paper, the existence of bounded positive solution of the second-order nonlinear neutral differential equations are studied. Some new sufficient conditions are given. Furthermore, examples given show that the results here are almost sharp.
Keywords
- Bounded positive solution;
- Krasnoselskii's fixed point theorem;
- positive and negative terms;
- forced terms