Two options I can think of, probably a lot more from the elders here:
1) turn off verbose
set_verbose(-1)
f(x) = x^(1/3)
plot(f(x),(-5,5))
2) Don't plot negative
f(x) = x^(1/3)
plot(f(x),(0,5))
-d
At 09:55 AM 12/18/2009, you wrote:
>Why when I want to graph f=x^(1/3) I get the following error?
>In this case, what should I do to get the complete graph?
>
>sage: plot(x^(1/3),x,-1,1)
>
>verbose 0 (2999: plot.py, generate_plot_points) WARNING: When
>plotting,
>failed to evaluate function at 100 points.
>verbose 0 (2999: plot.py, generate_plot_points) Last error message:
>'negative number to a fractional power not real'
>
>
>And the graph goes wrong
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