On 2017-10-26, david.guichard <david.guich...@gmail.com> wrote: > integral(sqrt(1+cos(x)^2),x,0,pi) > > 0
The bug appears to be tickled by the Maxima package abs_integrate. Without abs_integrate, integrate(sqrt(1 + cos(x)^2), x, 0, %pi) just returns a noun expression. > Zero is decidedly not correct. The problem is apparently here: > > integral(sqrt(1+cos(x)^2),x) > > -1/24*sin(3*x) + 1/8*sin(x) Hmm, for the indefinite integral I get (with abs_integrate) (%i4) integrate(sqrt(1+cos(x)^2),x); (%o4) ((2*sin(3*x)+6*sin(x))*false-sin(3*x)+3*sin(x))/24 Obviously the presence of 'false' is a bug. If you can make a bug report in the Maxima bug tracker, that would very helpful. https://sourceforge.net/p/maxima/bugs By the way I am working with Maxima 5.40+ (almost 5.41). best, Robert Dodier -- 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 https://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
