Problem with acos



Paul Rey <paul.rey82 <at> yahoo.fr> writes:

> 
> 
> Excuse my very very bad english.
> I have a proble to compute integrate(acos(cos(t)),t,0,%pi/2), maxima return
-3*%pi^2/8 instead of %pi^2/8.

Just tested, and  Maxima return 

 %pi^2/8

Renzo