As you may know, I’m running Sage 4.3 under Ubuntu Karmic.
Yesterday I was trying some basic features of SAGE, say 2D graphics, and I was impressed by its usability.
First I define a function (my first try was)
phi(x) = arctan(x)
and it work. So I move to a function with two variables,
phi(x, s) = 1/s*(arctan(x^s))^s
and it shows the right expression.
plot(phi(x, 2), (x, -3, 3))
shows me the plot…. and finally I made a loop for plotting the function for a set of odd values of the s-parameter,
for s in range(1,6,2): plot(phi(x, s), (x, -5, 5))
And it did it!
I tried to do something similar (with much complicated functions, of course) in Mathematica 7, but it has a kernel bug (guess so) for loops of plotting.