#7401: Derivative at a point is not translated into Maxima
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Reporter: robert.marik | Owner: was
Type: task | Status: needs_review
Priority: minor | Milestone: sage-6.5
Component: interfaces | Resolution: fixed
Keywords: derivative, at, | Merged in:
maxima | Reviewers: Karl-Dieter Crisman,
Authors: Robert Marik | Nils Bruin, Peter Bruin
Report Upstream: N/A | Work issues: add doctests
Branch: | Commit:
u/kcrisman/pointderivs | 476d8c43f23185ea22c46a9b30fd37c9ead46668
Dependencies: | Stopgaps:
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Comment (by nbruin):
Replying to [comment:24 kcrisman]:
> New commits:
>
||[http://git.sagemath.org/sage.git/commit/?id=476d8c43f23185ea22c46a9b30fd37c9ead46668
476d8c4]||{{{Add doctests for #7401 about derivatives at a point}}}||
Two comments:
* use `a = function('f')(x,y).diff(x)` to avoid the confusing (and
hopefully to deprecated) function('f',x,y).
* perhaps include an example that also tests the behaviour when the
auxiliary variables aren't necessary:
{{{
sage: a = function('f')(x,y).diff(x)
sage: a
D[0](f)(x, y)
sage: maxima(a)
'diff('f(_SAGE_VAR_x,_SAGE_VAR_y),_SAGE_VAR_x,1)
}}}
since that also illustrates a template how to arrive at more user-friendly
printing.
--
Ticket URL: <http://trac.sagemath.org/ticket/7401#comment:25>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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