In this paper He's variational iteration method is used to solve some examples of linear and non-linear forth-order boundary value problems. The first problem compared with homotopy analysis method solution and the other ones with the exact solution. The results show the high accuracy and speed of convergence of this. method. is found that the variational iteration method is a powerful method for solving of the non-linear equations.
- Boundary value problems
- Fourth-order differential equations
- Variational iteration method