“…Generally it is tough experience in order to find an exact result of a wide range of differential equations. Nevertheless, numerous effective techniques has been developed to find the approximate result of partial differential equations (PDE's) with proportional delay, such as functional constraint's method [5], iterated pseudo spectral method [6], reduce differential transform method (RDTM) for PDE's by Abazari and Ganji [7], homotopy perturbation method for time fractional PDE's by Sakar et al and F. Shakeri [4,8], variational iteration method (VIM) [9], predictor-corrector algorithm [10], Adams-Bashforth-Moulton algorithm [11], a numerical method for delayed differential equations in fractional order: based on the definition of GL [12], an extended predictor-corrector algorithm for differential equations in variable-order fractional delay [13], Optimal Periodic-Gain fractional delayed state feedback control for linear periodic time-delayed systems [14], spectral collocation methods [15], group analysis method for Burgers equation due to Tanthanuch [16], and the two-dimensional differential transform method the solution of specific class of PDE's [17].…”