“…The existence and uniqueness of solutions to fractional differential equations have been investigated [2,7,9,14]. In addition, when , Eq(1.1) reduces to linear integro-differential equation and the numerical methods for this equation have been extensively studied by many authors [8,12,15]. There are many methods for seeking approximate solutions such as collocation method, the fractional differential transform method, Legendre wavelet method, Taylor expansion method and Adomian decomposition method, See ([1, 4,5,10,13]).…”