Use Piecewise. Type Piecewise? For examples.
On Tuesday, March 16, 2010, Jose Guzman <n...@neurohost.org> wrote:
> Hi everybody,
>
> i was wondering, which is the best method to plot a conditional function
> within an interval. For example, a function whose values are:
>
> 0 if t<t0
> f(t) if t>t0
>
> where f(t) is a simple monoexponential decay that starts at t0. I tried the
> following in Sage:
>
> t = var('t')
>
> def f(t,t0):
> if t<t0:
> return 0
> else:
> return e**(-(t)/tau)
>
> Now if I plot
>
> plot(f(t,t0=0.5,tau=0.05,0,1,rgbcolor='red')
>
> The plot starts at t=0 and unfortunately the function f(t) too!
>
> Is there any better way to define a conditional function with Sage?
>
> Thanks a lot in advance.
>
> Jose.
>
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