Approximate solutions for the generalized KdV-Burgers' equation by He's variational iteration method

In this paper, the variational iteration method is used for solving the generalized KdV-Burgers' ( GKdVB( p, m, q)) equations with nonzero parameters p, m and q. We can see the GKdVB ( p, m, q) equations from another point of view as the generalized Burgers' ( GB( p, m, q)) equations and the generalized KdV ( GKdV( p, m, q)) equations by considering various parameters. Two test problems are used to demonstrate the accuracy of our technique.