Hey,

I'm relative new to sage, but intend to use it for math and physics
classes instead of mathcad.

After upgrading from sage 3.0.6 to 3.1.1, I can't get any functions to
plot outside of [-1..1].

For example:
sage: f = sin(x)
sage: f(0.5)
0.479425538604203
sage: f(5.0)
-0.958924274663138
sage: p = plot(f)
sage: show(p,xmax=2*pi)

Only gives me the graph until x==1, and leaves the rest of the figure
blank with only hte axes on.

Anybody knows what I'm doing wrong?
Is there a way to define which interval a functions get evaluated at?

Thanks in advance.
Munthe

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