2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/65488We prove that, for generic systems of polynomial differential equations, the dependence of the solution on the initial conditions is not differentially algebraic. This answers, in the negative, a question posed by L.A. Rubel.Classical Analysis and ODEs34A09; 12H05Solution to Rubel's question about differentially algebraic dependence on initial valuestext