Periodic wave solutions and solitary wave solutions to (2+1)-dimensional KdV equation

The F-expansion method proposed recently is extended and,by using it, the periodic wave solutions expressed by Jacobi elliptic functions to the (2+1)-dimensional KdV equation are obtained. In the limit cases, the solitary wave solutions and trigonometric function solutions are obtained as well. The F-expansion as an overall generalization of Jacobi elliptic function expansion can be applied to solve other nonlinear evolution equations.