The existence of a solution of the nonlinear differential equation in the modeling of the eardrum is determined using the homotopy perturbation method. International Journal of Food and Nutritional Sciences, [S. l.], v. 10, n. Special Issue 1, p. 18–22, 2021. Disponível em: https://ijfans.org/index.php/Journal/article/view/3698. Acesso em: 9 sep. 2026.