A formula substituting the undetermined coefficients and the annihilator methods

• Autores: Oswaldo Rio Branco de Oliveira
• Localización: International journal of mathematical education in science and technology, ISSN 0020-739X, Vol. 44, Nº. 3, 2013, págs. 462-468
• Idioma: inglés
• DOI: 10.1080/0020739x.2012.714496
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• Resumen

  • 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.