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From "Alexander Nozik (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (MATH-1143) Helper methods to FiniteDifferencesDifferentiator
Date Thu, 30 Apr 2015 14:37:06 GMT

    [ https://issues.apache.org/jira/browse/MATH-1143?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14521576#comment-14521576
] 

Alexander Nozik commented on MATH-1143:
---------------------------------------

Thank you Luc, I think that's what I needed.

> Helper methods to FiniteDifferencesDifferentiator
> -------------------------------------------------
>
>                 Key: MATH-1143
>                 URL: https://issues.apache.org/jira/browse/MATH-1143
>             Project: Commons Math
>          Issue Type: Improvement
>            Reporter: Alexander Nozik
>            Priority: Trivial
>
> A DerivativeStructure and UnivariateDifferentiableFunction are great tools if one needs
to investigate the whole function but are not convenient if one just needs derivative in a
given point.
> Perhaps you could add some helper methods to FiniteDifferencesDifferentiator or to utility
class like FunctionUtils. Also it would be good to have helper methods to get the derivatives
of UnivariateDifferentiableFunction or MultivariateDifferentiableFunction as simple Univariate
or Multivariate functions (or vector-functions).



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