This notation isn't very flexible though. For example, suppose I wanted to plot h(-x,n) over the same range.
Can this be done without calling the symbolic engine? Is there a way to bypass symbolic plots altogether? On Apr 8, 11:25 pm, John H Palmieri <jhpalmier...@gmail.com> wrote: > On Friday, April 8, 2011 2:51:03 PM UTC-7, ObsessiveMathsFreak wrote: > > > That worked, thank you. But I don't understand why the standard > > notation has so many problems. What exactly is going wrong? > > I think this is what's going on: if you start with this: > > > > def h(x,n): > > > > if x>2: > > > > return n-x > > > > else: > > > > return n*x-2 > > and then do > > sage: plot(h(x, 3), (x, 0, 4)) > > (I assume this is what you mean by the "standard notation"), then *first* > Sage tries to evaluate h(x,3). It can't tell that "x>2" is True, so it > returns n*x-2, in this case 3*x-2. Then it plots that. In other words, it > evaluates h symbolically as best it can: > > sage: h(x, 3) > 3*x-2 > > Then it calls 'plot' on the result. > > -- > John -- 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
