HACETTEPE JOURNAL OF MATHEMATICS AND STATISTICS, cilt.50, sa.5, ss.1434-1447, 2021 (SCI-Expanded)
An effective matrix method to solve the ordinary linear integro-differential equations with variable coefficients and variable delays under initial conditions is offered in this article. Our method consists of determining the approximate solution of the matrix form of Morgan-Voyce and Taylor polynomials and their derivatives in the collocation points. Then, we reconstruct the problem as a system of equations and solve this linear system. Also, some examples are given to show the validity and the residual error analysis is investigated.