#12947: Bug in integrating x*cos(x^3)
----------------------------+-----------------------------------------------
Reporter: kcrisman | Owner: burcin
Type: defect | Status: new
Priority: major | Milestone: sage-5.1
Component: calculus | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: | Merged in:
Dependencies: | Stopgaps:
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Comment (by kcrisman):
Robert points out that in 5.27.0 this is at least a little better, though
we still need to change domain.
{{{
Maxima 5.27.0 http://maxima.sourceforge.net
using Lisp SBCL 1.0.24
Distributed under the GNU Public License. See the file COPYING.
Dedicated to the memory of William Schelter.
The function bug_report() provides bug reporting information.
(%i1) display2d:false;
(%o1) false
(%i2) domain:complex;
(%o2) complex
(%i3) integrate (x*cos(x^3), x, 0, 1/2);
(%o3) %i*gamma_incomplete(2/3,%i/8)/(4*sqrt(3))
-gamma_incomplete(2/3,%i/8)/12-%i*gamma_incomplete(2/3,-%i/8)/(4*sqrt(3))
-gamma_incomplete(2/3,-%i/8)/12+gamma(2/3)/6
(%i4) expand(float(%));
(%o4) .1247560409610377
}}}
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/12947#comment:3>
Sage <http://www.sagemath.org>
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