Approximation of Fractional Derivatives Via Gauss Integration

Details Approximation of Fractional Derivatives Via Gauss Integration Approximation of Fractional Derivatives Via Gauss Integration

2010-04-07

arxiv.org/abs/1004.1029v2

Mathematics

Numerical Analysis

Scientific paper

In this paper approximations of three classes of fractional derivatives (FD) using modified Gauss integration (MGI) and Gauss-Laguerre integration (GLI) are considered. The main solutions of these fractional derivatives depend on inverse of Laplace transforms, which are handled by these procedures. In the modified form of integration the weights and nodes are obtained by means of a difference equation, which gives a proper approximation form for the inverse of Laplace transform and hence the fractional derivatives. Theorem is established to indicate the boundary of the error of the solutions. Numerical examples are given to illuminate the results of the application of these methods.

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