In recent years 1999, the variational iteration method (VIM)
was proposed by He in [1–6]. This method is now widely used
by many researchers to study linear and nonlinear partial differential
equations. The method introduces a reliable and efficient
process for a wide variety of scientific and engineering
applications, linear or nonlinear, homogeneous or inhomogeneous,
equations and systems of equations as well. Many
authors [7–11] that this method is more powerful than existing