Anthony Uyi Afuwape
Departmento de Matematicas,
Universidad de Antioquia,
Calle 67, No. 53-108,
Medellin AA 1226,
Colombia
Mathew Omeike
Department of Mathematics,
University of Agriculture,
Abeokuta, Nigeria.
In this paper we prove the existence of a limiting regime in the sense of Demidovic for certain third order nonlinear differential equations. We also prove that such a solution is periodic ( or almost periodic) whenever the forcing term is periodic ( or almost periodic). The generalized Theorems of Demidovic are used in the proofs of our results. The results generalize earlier results in the literature.