**7. Conclusions**

It is clear from the structure of the solitary wave solution of the DFKdV, DFMKdV and DFZK that the soliton amplitude and width depends on the nonlinearity and dispersion of the evolution equations, which are the function of different plasma parameter involve in the consider plasma system. Also evident from the structure of the approximate analytical solution that the amplitude and the width of the soliton depends on the Mach number ð Þ *M*ð Þ*τ* which involve the forcing term *F*<sup>0</sup> cosð Þ *ωτ* and the damping parameter. Thus the amplitude and the width of the solitary wave structure changes with the different plasma parameters. Also they are changes with the change of strength of external force *F*0, frequency of the external force *ω* and the collisional frequency between the different plasma species. The effect of these parameter can be studied through numerical simulation.

*Approximate Analytical Solution of Nonlinear Evolution Equations DOI: http://dx.doi.org/10.5772/intechopen.93176*
