On Sun, Jun 9, 2013 at 3:25 PM, <computational.gr...@gmail.com> wrote:
> Suppose I have a complex function f(z) with a continuous family of zeros
> (e.g., f(z)=z-|z|)
>
> Is there a way to easily plot the set of zeros of f in sage, regardless of
> how complicated the function f is?
>
You might find complex_plot useful. For example, for
f(z) = z - abs(z)
complex_plot(f, (-3,3), (-3,3))
you'll see a *black line* at the zero set of f(z).
In the notebook you mind find an interact like this useful:
z = var('z')
@interact
def _(f = z-abs(z), B=(2..10)):
show(complex_plot(f, (-B,B), (-B,B)))
Or just click on
http://sagecell.sagemath.org/?q=cdcdd7e5-73b4-4c87-87e2-1be300f86674
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--
William Stein
Professor of Mathematics
University of Washington
http://wstein.org
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