Özel M.Tarakçı M.Sezer M.2024-07-222024-07-22201820081359http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/14953In this study, we consider a linear nonhomogeneous differential equation with variable coefficients and variable delays and present a novel matrix-collocation method based on Morgan–Voyce polynomials to obtain the approximate solutions under the initial conditions. The method reduces the equation with variable delays to a matrix equation with unknown Morgan–Voyce coefficients. Thereby, the solution is obtained in terms of Morgan–Voyce polynomials. In addition, two test problems together with error analysis are performed to illustrate the accuracy and applicability of the method; the obtained results are scrutinized and interpreted by means of tables and figures. © 2018, The Author(s).EnglishAll Open Access; Hybrid Gold Open AccessArticle10.1007/s40096-018-0253-5