#6423: Sage not always understanding i=sqrt(-1) - Maxima bug proably
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Reporter: drkirkby | Owner: tbd
Type: defect | Status: new
Priority: major | Milestone:
Component: algebra | Keywords:
Reviewer: | Author:
Merged: |
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Vladimir Bondarenko (a developer of software to test computer algebra
systems - see [http://www.cas-testing.org/] ), had been playing with
[http://demo.sagenb.org/] and noted the following:
{{{
exp(-x^i).integral(x,0,1) returns
Traceback (click to the left for traceback)
...
Is %i an integer?
Ouch! Any Sage comments?
}}}
When I reported his on sage-devel, William Stein said:
''A large amount of the symbolic functionality that uses Maxima has
issues like this, but unfortunately there is basically nothing we can do
about it, except continue with projects to rewrite the parts of Sage that
call Maxima so that they don't call Maxima. So this class of bugs should
be very good motivation to continue to work on
implementing symbolic integration ourselves (and/or further improving
sympy!).''
He then went on to say he wanted it reported as a TRAC bug but was busy,
so I have done it on his behalf.
I don't feel able to comment much more on this, and personally don't
intend trying to fix it (outside my knowledge), so I've just reported it.
Can someone else add appropriate priority, milestones, keywords etc, as
this is completely outside my ''comfort zone''.
David Kirkby
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/6423>
Sage <http://sagemath.org/>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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