Solving the non-linear system of third-order boundary value problems by using He s homotopy perturbation method

N this paper we introduce a homotopy perturbation method (hpm) to solve non-linear system of third-order boundary value problems. using the hpm, it is possible to find the exact solution in some cases or an approximate solution in convergent series forms. this method is a powerful devise for solving a wide variety of problems, without any discretization, linearizetion or small perturbations. some examples are presented, and obtained results ensure that this method is very effective, simple and has less the numerical computation.