PHYSICS LETTERS A, vol.372, no.21, pp.3829-3835, 2008 (SCI-Expanded)
In this Letter, a mathematical model of the problem of prey and predator is presented and He's variational iteration method is employed to compute an approximation to the solution of the system of nonlinear differential equations governing the problem. The results are compared with the results obtained by Adomian decomposition method and homotopy perturbation method. Comparison of the methods show that He's variational iteration method is a powerful method for obtaining approximate solutions to nonlinear equations and their systems. (C) 2008 Elsevier B.V. All rights reserved.