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Volume :16 Issue : 1 1989
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Singular perturbation for a non-autonomous second order
Auther : A. EL-NAHHAS
Department of Mathematics, Faculty of Science, Aswan, Egypt
ABSTRACT
This paper studies the existence and the uniqueness of a periodic solution for a singularly perturbed nonlinear non-autonomous second order differential equation with retarded argument.The perturbation has a small parameter and the retardation is assumed to be constant.