A numerical method to obtain positive solution for classes of sublinear semipositone systems

摘要

Using a numerical method based on sub–super solution, we will obtain positive solution to the coupled-system of boundary value problems of the formwhere f, g are C1 functions with at least one of f(x0, 0, 0) or g(x0, 0, 0) being negative for some x0 ∈ Ω (semipositone).