Approximation of fractional derivatives via Gauss integration



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


Fractional derivative Laplace transform Gauss quadrature 

Mathematics Subject Classification (2010)

26A33 44A10 41A55 


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Copyright information

© Università degli Studi di Ferrara 2011

Authors and Affiliations

  1. 1.Department of Mathematics, Faculty of ScienceK. N. Toosi University of TechnologyTehranIran

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