Department of Applied Mathematics, Dalian University of
Technology, Dalian 116023, China
Abstract:
In this paper, extended projective Riccati equation method is presented for constructing more new exact solutions of nonlinear differential equations in mathematical physics, which is direct and more powerful than projective Riccati equation method. In order to illustrate the effect of the method, Broer-Kaup-Kupershmidt
system is employed and Jacobi doubly periodic solutions are obtained.
This algorithm can also be applied to other nonlinear differential equations.