#7472: Taylor polynomial in two variables does not work
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Reporter: robert.marik | Owner: burcin
Type: enhancement | Status: needs_review
Priority: major | Milestone:
Component: calculus | Keywords: taylor polynomial, derivative
Work_issues: | Author:
Reviewer: | Merged:
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Comment(by robert.marik):
Replying to [comment:3 kcrisman]:
> I'm waiting for a build of 4.2.1... but in the meantime, is the new
syntax (list for variables, list for numbers) more or less equivalent to
other Sage functionality, or Mathematica/Maple syntax? I honestly don't
know, just asking. It would be good to have compatibility, though. For
instance, plotting has the variable and range together (x,-5,5), so maybe
[x,4] and [y,1] would be more appropriate? Looks like Mma allows for
different "distance" for different variables, see
[http://reference.wolfram.com/mathematica/ref/SeriesCoefficient.html
here]... Just thinking out loud here.
Can be done easily, the expression is passed to Maxima and Maxima allows
many possibilities how to use
[http://maxima.sourceforge.net/docs/manual/en/maxima_30.html#Item_003a-
taylor taylor command]. I wanted to do as minotr change as possible. I was
thinking for example also on the possibility to use different order for
different variable, but I do not know if there is a demand for this.
I do not know to much about habits in Sage notation, but I think that we
evaluate expansion about point in n-dimensional space, so the coordinates
should be together.
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7472#comment:4>
Sage <http://www.sagemath.org>
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and MATLAB
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