[jira] [Commented] (MATH-1420) Symbolic differentiation pull request

["Gilles (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/MATH-1420?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16053121#comment-16053121 ] 

Gilles commented on MATH-1420:
------------------------------

You should post on the "dev" ML of the "Commons" project.
There, please provide more details on the intended audience of this functionality (use-cases).
But be aware that "Commons Math" is being refactored into more manageable codebases (new components and/or modules); and human resources are scarce for such a big task (help welcome, see the list of JIRA issues...).
Personally, I'd be wary to add parsing code to "Commons Math" since it is mainly a repository of numerical algorithms; the contents of your project might be better suited to another component.
From the above example, I'd suggest "Commons Text"...

> Symbolic differentiation pull request
> -------------------------------------
>
>                 Key: MATH-1420
>                 URL: https://issues.apache.org/jira/browse/MATH-1420
>             Project: Commons Math
>          Issue Type: New Feature
>    Affects Versions: 3.6.1
>            Reporter: Ernie DeFoy
>              Labels: newbie
>
> I have a system that parses mathematical expressions and can symbolically differentiate, reduce and evaluate mathematical expressions.  It is able to be expanded to integrate, and I think it is written well for the most part.
> For example:
> >> System.out.println(calculus.diff("4*x^2 - csc(x^3)"));
> 8*x+3*x^2*cot(x^3)*csc(x^3)
> or
> 8x + 3x^2cot(x^3)csc(x^3)
> I wonder if this would be useful/relevant to the Apache project.  I would love to create a pull request and add this feature



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