نوع فایل:PDF تعدادصفحات:9 سال انتشار:1395 چکیده In this paper , the Combined Laplace Transform- homotopy perturbation Method is used to solve nthorder integro-differential equations . The results show that the method is very simple and effective.Comparisonn with exact solution shows that the method is very effective and convenient for solvingintegral equations واژگان کلیدی Integro-Differential Equations,Laplace Transform Method, homotopy ...