Fitted difference schemes for ordinary linear differential equations

In this study, we investigate the numerical solutions of first-order and second-order differential equations and singularly perturbed linear initial and boundary-value problems. By the method of integral identities with the using exponential basis functions and interpolating quadrature rules with the weight and remainder term in integral form an exponentially fitted difference scheme on an uniform mesh has been developed. Finally, we show that numerical results are in agreement with the theoretical results.