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On Generalized High Order Derivatives of Nonsmooth Functions

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DOI: 10.4236/ajcm.2014.44028    2,729 Downloads   3,249 Views   Citations


In this paper, we proposed a Extension Definition to derive, simultaneously, the first, second and high order generalized derivatives for non-smooth functions, in which the involved functions are Riemann integrable but not necessarily locally Lipschitz or continuous. Indeed, we define a functional optimization problem corresponding to smooth functions where its optimal solutions are the first and second derivatives of these functions in a domain. Then by applying these functional optimization problems for non-smooth functions and using this method we obtain generalized first derivative (GFD) and generalized second derivative (GSD). Here, the optimization problem is approximated with a linear programming problem that by solving of which, we can obtain these derivatives, as simple as possible. We extend this approach for obtaining generalized high order derivatives (GHODs) of non-smooth functions, simultaneously. Finally, for efficiency of our approach some numerical examples have been presented.

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The authors declare no conflicts of interest.

Cite this paper

Zeid, S. and Kamyad, A. (2014) On Generalized High Order Derivatives of Nonsmooth Functions. American Journal of Computational Mathematics, 4, 317-328. doi: 10.4236/ajcm.2014.44028.


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