Special solutions in terms of hyperbolic functions for nonlinear dispersive K(m,n) equations

In this paper, Exp-function method is applied to obtain the solutions for the nonlinear dispersive K(m,n) equations. We choose as an example the nonlinear dispersive K(2,2) and K(3,3) equations and obtained the exact special solutions in terms of hyperbolic functions of the phase, rational solutions with a simple pole at the origin.