In this paper, we obtain a family of solitary solutions for the K-P equation uxt+6(uux)x+uxxxx+3k2uyy=0, and the Boussinesq equation utt-uxt-6(u2)xx+uxxxx=0, Moreover, we obtain a class of analytic solutions for the Schrodinger equation iut+uxx-uyy+β|u|2u=0, and the Klein-Gordon equation utt-(uxx+uyy)+μ2u+β|u|2u=0. |