Tanh-type and sech-type solitons for some space-time fractional PDE models

Tanh-type and sech-type soliton solutions are constructed for the fractional modified KdV-Zakharov-Kuznetsov equation and the fractional generalized Duffing equation. Both equations are reduced to ordinary differential equations by using compatible fractional complex transforms. Suitable powers of tanh and sech ansatzs including unknown free parameters are applied to both equations. After determining the powers, these parameters are determined using computer algebra. The obtained soliton solutions are depicted for particular cases for various values of derivative order.