Abstract
Existence of positive solutions for advanced equations with several terms x (t)+ Σk=1m ak(t) x(hk(t))=0, hk(t)≥t is investigated in the following three cases: (a) all coefficients ak are positive; (b) all coefficients ak are negative; (c) there is an equal number of positive and negative coefficients. Results on asymptotics of nonoscillatory solutions are also presented.
Original language | English |
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Article number | 637142 |
Journal | Abstract and Applied Analysis |
Volume | 2011 |
DOIs | |
State | Published - 22 Jun 2011 |
ASJC Scopus subject areas
- Analysis
- Applied Mathematics