on the exact solution for nonlinear partial differential equations

In this study, we aim to construct a traveling wave solution for non-linear partial differential equations. in this regards, a cosine-function method is used to find and generate the exact solutions for three different types of nonlinear partial differential equations such as general regularized long wave equation (grlw), general korteweg-de vries equation (gkdv) and general equal width wave equation (gewe) which are the major soliton equations.