نوع فایل:PDFتعدادصفحات:9سال انتشار:1395چکیدهIn 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 equationsواژگان کلیدیIntegro-Differential Equations,Laplace Transform Method, homotopy perturbationMethod