A further extended tanh-function method and new soliton-like solutions to the integrable Broer–Kaup (BK) equations in (2+1) dimensional spaces

摘要

Based on an extended tanh-function method, a further extended tanh-function method is suggested to obtain multiple exact solutions for nonlinear partial differential equations, which including soliton-like solutions, solitary waves and trigonometric function solutions. The validity and reliability of the method is tested by its application to the integrable Broer–Kaup equations in (2+1) dimensional spaces. More new explicit exact solutions are found.