Multi-point Taylor approximations in one-dimensional linear boundary value problems

摘要

We consider second-order linear differential equations in a real interval I with mixed Dirichlet and Neumann boundary data. We consider a representation of its solution by a multi-point Taylor expansion. The number and location of the base points of that expansion are conveniently chosen to guarantee that the expansion is uniformly convergent ∀x∈I. We propose several algorithms to approximate the multi-point Taylor polynomials of the solution based on the power series method for initial value problems.