It may be "branch cut strangeness", but if so it is very strange. The integrand is clearly well-behaved, and the integral, while in terms of the incomplete gamma function, seems to be off the usual branch cut (negative real axis).
On Monday, 14 May 2012 15:35:01 UTC+1, Robert Dodier wrote: > > On 2012-05-14, kcrisman <kcris...@gmail.com> wrote: > > > This is now http://trac.sagemath.org/sage_trac/ticket/12947. We've had > > some issues with incomplete gamma functions translating properly in the > > past, and/or errors in Maxima, but I didn't have time to either look > into > > that or whether there was another ticket open for this, apologies if > there > > is one - just wanted to make sure this was opened. > > My first guess is that there is branch cut strangeness going on. Sorry, > I don't have any details. But if you want to investigate, try > integrate(x*cos(x^3), x, 0, u) and then differentiate w.r.t. u, as a > point of departure. > > best, > > Robert Dodier > > > -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
