"Bill Wood" <william.wood3 at comcast.net> schrieb: > On Wed, 2007-05-16 at 06:23 -0400, sen1 at math.msu.edu wrote: >> Also, it is curious that Maple 10 returns >> sin(x)^2/2 >> while Mathematica 3.0 returns >> -cos(x)^2/2 > FWIW Axiom Version April 2006 also returns -cos(x)^2/2 MuPAD pro 3.1 returns -cos(2*x)/4. HTH Wolfgang