the application of the variational homotopy perturbation method on the generalized fisher's equation

in this paper, we consider the variational homotopy perturbation method (vhpm) to obtain an approximate series solution for the generalized fisher’s equation which converges to the exact solution in the region of convergence. comparisons are made among the variational iteration method (vim), the exact solutions and the proposed method. the results reveal that the proposed method is very effective and simple and can be applied for other nonlinear problems in mathematical.