Periodic Solution for Nonlinear Second Order Differential Equation System

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Hojeen M. Haji, Raad N. Butris, Hezha H. Abdulkareem, Dlovan H. Omar


In this work, we investigate the periodic solutions for non-linear system of differential equations
by using the method of periodic solutions of ordinary differential equations which are given by
A.M.Samoilenko. Additionally, the existence and uniqueness theorem have been proved for second
differential equations system by using Banach fixed point theorem

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