Hello Laurent and Michel ! [Maybe french users...]
>> I never have any luck with plotting in Sage. The simplest plots fail. >> For example the following >> >> plot(20*log(abs((1+I*x)^4+4),10),(x,0,3)) >> >> > The answer of this > f(x) = abs((1+I*x)**4+4) > f(1) > is 0. > > Then the logarithm produces -infinity I found also this error in some case, it's possible to go arround by a lambda function. This is the method in maple or mupad with -> in plot (t->tan(t), t=0..10) against plot (tan(t), t=0..10) In my sage-4.2 plot (lambda x : 20*log(abs(1+I*x), 10), (x,0,4)) seems perfectly right. François -- To post to this group, send email to sage-support@googlegroups.com To unsubscribe from this group, send email to sage-support-unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/sage-support URL: http://www.sagemath.org
