2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/221884The paper deals with a non-linear system largely used in biology, which, in certain conditions and for particular coefficient values, becomes linear, with a linear diagram over a large range of time. It can be used as a veritable regulator in systems' control4 pages, exposed on 2nd "European Conference on Computer Sience and Applications" - XA2008, Timisoara, RomaniaDiscrete Mathematicstext