The extended F-expansion method and exact solutions of nonlinear PDEs

The extended F-expansion method is proposed and applied to some different kinds of nonlinear PDEs. More Jacobi elliptic function solutions are obtained including the single function solutions and the combined function solutions. When the modulus m of Jacobi elliptic function is driven to the limit 1 and 0, hyperbolic function solutions and trigonometric function solutions can also be obtained respectively.