Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
844845 | Nonlinear Analysis: Theory, Methods & Applications | 2006 | 16 Pages |
We obtain sufficient conditions for the existence of at least three positive solutions for the second-order neutral functional differential equation x″(t)+q(t)f(t,x(t),x(t−τ),x′(t),x′(t−τ))=0,0