2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/161166A quadratic inequality is formulated in the paper. An estimate on the rate of decay of solutions to this inequality is obtained. This inequality is of interest in a study of dynamical systems and nonlinear evolution equations.Dynamical SystemsClassical Analysis and ODEs65J15, 65J20, 65N12, 65R30, 47J25, 47J35text