Resumen de A formula substituting the undetermined coefficients and the annihilator methods

Oswaldo Rio Branco de Oliveira

• This article presents an easy formula for obtaining a particular solution of a linear ordinary differential equation with constant real coefficients, , where fis a function given by a linear combination of polynomials, trigonometrical and exponential real function products. The desired solution is obtained through solving straightforward lower triangular linear systems with constant coefficients. Three examples are given.