advection-diffusion equation with a nonlinear source term. This equation is the classical
advection-diffusion equation in which the space derivatives are replaced by the Riemann-
Liouville derivatives of order 0< σ≤ 1 and 1< μ≤ 2. Also the stability and convergence of the
presented method are shown for this equation. Finally some numerical examples are solved
using the presented method.