In this paper, we deal with a class of boundary-value problems for the singularly perturbed
Fredholm integro-differential equation. To solve the problem, we construct a new difference …

This article presents two numerical methods of the order of three for singular perturbation
problems, with a small positive parameter using finite differences. It is a problem with an …

In this paper, the initial value problem for the second order singularly perturbed Volterra
integro-differential equation is considered. To solve this problem, a finite difference scheme …

As is known solving many scientific and engineering problems can be reduced to calculation
of definite integrals. Many famous and known authors studies this phenomenon very long …

A system of singularly perturbed initial value problems with weak constrained conditions on
the coefficients is considered. First the system of second-order singularly perturbed …

In this study, we consider the singularly perturbed initial-value problem for a class of second-
order delay differential equation. We construct a fitted difference scheme on a uniform mesh …