solutions of modified fornberg{whitham equation via the tan(φ=2)-expansion method

The aim of present paper is to obtain the analytical solution of modified fornberg-whitham equation by using tan(φ=2)-expansion method. these methods are used to construct solitary and soliton solutions of nonlinear evolution equation. the method is straightforward and concise, and its applications are promising. this method is developed for searching exact travelling wave solutions of nonlinear partial differential equations. also, it is shown that the method, with the help of symbolic computation, provides a straightforward and powerful mathematical tool for solving nonlinear evolution equations.