Si studia l'omogeneizzazione periodica di una particolare equazione differenziale ordinaria. Si studiano alcune proprietà dell'equazione omogeneizzata e in certi casi se ne trova la formula esplicita.
As a numerical method for solving ordinary differential equations , the improved Euler method is not assumed to give exact solutions. In this paper we classify all cases where this method gives the exact solution for all initial conditions. We reduce an infinite system of partial differential equations for to a finite system that is sufficient and necessary for the improved Euler method to give the exact solution. The improved Euler method is the simplest explicit second order Runge-Kutta method....