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    • Solution to a Damped Duffing Equation Using He’s Frequency Approach 

      Salas, Alvaro H. S.; Cieza Altamirano, Gilder; Sánchez-Chero, Manuel (HindawiCO, 2022-07-11)
      In this paper, we generalize He’s frequency approach for solving the damped Duffing equation by introducing a time varying amplitude. We also solve this equation by means of the homotopy method and the Lindstedt–Poincaré ...