I am getting an error that I don't understand for the following definite integral.
sage: integral(sqrt(1+(9*cos(3*x)^2)),0,pi/2) This is definitely real on its domain and under the square-root is always positive. Nevertheless, I get the error: "RuntimeError: ECL says: Error executing code in Maxima: sign: argument cannot be imaginary; found %i" I can get an answer using "numerical_integral". But I would like to know if I'm missing something. Thanks. -- 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 http://groups.google.com/group/sage-support. For more options, visit https://groups.google.com/d/optout.
