Department of Mathematics;
Faculty of Science;
Sohag University;
Sohag;
Egypt;
Department of Mathematics;
Faculty of Science;
Taif University;
Taif;
KSA;
Nonlinear; Oscillators; Homotopy; Perturbation; Method; Parameter; Expanding; Method; Fractional; Van; der; Pol; Damped; Nonlinear; Oscillator;