“…He [2,3].This method has been widely used for solving the analytic solutions of physically signifi cant equations arranging from linear to nonlinear, from ordinary diff erential to partial diff erential, form integer to fractional, et.al [2,3,4,8,15,16,17,18,19,20]. The idea of VIM is to construct correction functionals using general Lagrange multupliers identifi ed optimally via the variational theory, and the initial approximations can be freely chosen with unknown constants.…”