Yes, integral does not handle abs correctly. sage: integral(abs(x),x) integrate(abs(x), x)
sage: integral(max(x,-x),x) x^2/2 If that's for sure a bug coming from maxima, I hope someone it can be reported to their bug list. I can see that it has been reported by David to the maxima-user list, but somehow it does not show up in either the user or the bug list of maxima. Isn't that strange? On Nov 19, 9:33 am, "David Joyner" <[EMAIL PROTECTED]> wrote: > Thanks for reporting this. I emailed the maxima users list. > > On Wed, Nov 19, 2008 at 11:50 AM, pong <[EMAIL PROTECTED]> wrote: > > > Maybe someone has reported this already... but looks like there is a > > bug in integral > > > sage: integral(x*abs(9-x^2), x, -6, 0) > > 162 > > > The integrand is negative on (-6,0) --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/sage-support URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
