A corrected quadrature formula and applications

Details A corrected quadrature formula and applications A corrected quadrature formula and applications

2003-03-26

arxiv.org/abs/math/0303342v1

Mathematics

Numerical Analysis

Scientific paper

A straightforward 3-point quadrature formula of closed type is derived that improves on Simpson's rule. Just using the additional information of the integrand's derivative at the two endpoints we show the error is sixth order in grid spacing. Various error bounds for the quadrature formula are obtained to quantify more precisely the errors. Applications in numerical integration are given. With these error bounds, which are generally better than the usual Peano bounds, the composite formulas can be applied to integrands with lower order derivatives.

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