2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/72565In this paper, an $\mathbb{R}$-analytical function and the sequence of its Taylor polynomials (which are Lyapunov functions different from those of Vanelli & Vidyasagar (1985, Automatica, 21(1):6 9--80)) is presented, in order to determine and approximate the domain of attraction of the exponentially asymptotically stable zero steady state of an autonomous, $\mathbb{R}$-analytical system of differential equations. The analytical function and the sequence of its Taylor polynomials are constructed by recurrence formulae using the coefficients of the power series expansion of $f$ at 0.17 pages, 2 figures accepted to be published in Nonlinear Analysis: Theory, Methods and Applications, Elsevier Science PublishersDynamical SystemsGeneral Mathematicstext