On Saturday, July 19, 2014 9:25:42 AM UTC-7, Anne Schilling wrote: > > Sage can solve this numerically: > > sage: g = lambda x : (1+e^(2*pi*I*x)).abs() > sage: numerical_integral(g,0,1) > (1.2732395447351625, 1.4155343563970746e-14) > sage: n(4/pi) > 1.27323954473516 > > but not symbolically: > > sage: integral(g,(x,0,1))
It can, but you have to give "integral" a symbolic expression, not a python function. You should probably not have wrapped the symbolic expression in a python function in the first place, but you can get it out again: sage: g(x) abs(e^(2*I*pi*x) + 1) sage: integrate(g(x),x,0,1) 1/2*(2*pi - I)/pi + 1/2*I/pi the latter simplifies to "1" -- You received this message because you are subscribed to the Google Groups "sage-devel" group. To unsubscribe from this group and stop receiving emails from it, send an email to sage-devel+unsubscr...@googlegroups.com. To post to this group, send email to sage-devel@googlegroups.com. Visit this group at http://groups.google.com/group/sage-devel. For more options, visit https://groups.google.com/d/optout.
