I was showing my students how to use Maxima to check their homework.
When I got to this part of the example I got a surprise.
integrate(sin(x)*cos(x),x)
maxima said it was -cos^2(x)/2 and my book said it was sin^2(x)/2 so I
looked it up in shaums formula book
and it said sin^2(x)/2.
So I then plotted up a graph in Octave and was convinced that Maxima is
wrong.
I then submitted a bug report and someone replied and told me that I
should take a course in basic calculus.
"
Date: 2007-05-15 17:21
Sender: nobody
Logged In: NO
Of course it?s NOT wrong!
Differentiate the result and see yourself ...
(and BTW, take a course in elementary calculus ;-))"
What do the experts here say?????
Doug Stewart B.E.Sc P.Eng.