Wrong subject line: it's a problem with improper definite integrals, not indefinite integrals...
On Friday, 17 July 2015 10:01:52 UTC+1, Johannes Lippmann wrote: > > Hello, > > > *Problem:* > Sage 6.7 returns for > > integrate(x/(x^2+1),(x,0,infinity)) > > the result 0. This is obviously wrong, since x/(x^2+1) is positive betwwen > 0 and Infinity. > > *What I found out by now:* > > I couldn't reproduce the error with any simpler function. > > > The antiderivate of the function is calculated correctly with > > integrate(x/(x^2+1),x) > > as 1/2*log(x^2 + 1). Manualy entering the values 0 and Infinity there > gives the correct result. > > > > > > What should I do now? > -- You received this message because you are subscribed to the Google Groups "sage-support" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-support+unsubscr...@googlegroups.com. To post to this group, send email to sage-support@googlegroups.com. Visit this group at http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
