johappy
2013-09-29
integrate(sqrt(1+cos(x)),x,0,2*%pi);
the result is 0
this is not wrong, because 1+cos(x) >= 0
Albrecht Mueller
2013-09-30
Try:
integral:integrate(sqrt(1+cos(x)),x); h1:radcan(integral); h2:trigreduce(h1); h3:factor(h2); wxplot2d(h3, [x,0,2*%pi]);
You will clearly see what the problem is: The symbolic solution of the integral contains a singularity at %pi.
I think Maxima should issue a warning or - better - provide a solution that does not contain this singularity.
johappy
2013-09-30
Great!
Thanks a lot!
Jo