#13973: Upgrade Maxima past the release 5.29.1
-------------------------------------------------+-------------------------
Reporter: dimpase | Owner: tbd
Type: defect | Status: new
Priority: major | Milestone: sage-6.3
Component: packages: standard | Resolution:
Keywords: sd48 | Merged in:
Authors: Jeroen Demeyer | Reviewers:
Report Upstream: Reported upstream. Developers | Work issues:
acknowledge bug. | Commit:
Branch: | Stopgaps:
Dependencies: |
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Comment (by pbruin):
The problematic doctest is the following one from
`sage/misc/functional.py`:
{{{
sage: f = exp(-x) * sinh(sqrt(x))
sage: t = integrate(f, x, 0, Infinity)
}}}
With an unpatched Sage 6.2 this does finish, but takes a very long time
(2-3 minutes). The same situation occurs for
{{{
sage: maxima('integrate(exp(-x)*sinh(sqrt(x)), x, 0, inf);')
}}}
This is surprising given that the following takes less than a second in
Maxima (both the one that comes with Sage and a standalone copy, and both
versions 5.29.1 and 5.33.0):
{{{
(%i1) integrate(exp(-x)*sinh(sqrt(x)), x, 0, inf);
(%o1)
1/4 1
%e (2 gamma_incomplete(1, 1) - gamma_incomplete(-, 1) - sqrt(%pi) -
2)
2
-
-------------------------------------------------------------------------
4
1/4 1
1/4 %e gamma_incomplete(-, 1)
%e gamma_incomplete(1, 1) 2
+ ---------------------------- - ----------------------------
2 4
1/4 1/4
%e sqrt(%pi) %e
+ --------------- - -----
4 2
}}}
It would seem to be an interface problem that already exists in some form
in Sage 6.2 and manifests itself more relentlessly with the Maxima 5.33.0
spkg I am making.
--
Ticket URL: <http://trac.sagemath.org/ticket/13973#comment:32>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
and MATLAB
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