An approximation solution of a nonlinear equation with Riemann–Liouvilleʹs fractional derivatives by Heʹs variational iteration method

In this article, an application of Heʹs variational iteration method is proposed to approximate the solution of a nonlinear fractional differential equation with Riemann–Liouvilleʹs fractional derivatives. Also, the results are compared with those obtained by Adomianʹs decomposition method and truncated series method. The results reveal that the method is very effective and simple.