Plotting gives this error 'negative number cannot be raised to a fractional power', but other apps plot this function

asked 2014-10-07 05:25:01 +0200

nmz787 gravatar image

I am new to Sage, and have started by using the Cloud version... so I don't know if this error is present in the offline version. Here is what I'm doing:

plot(exp(x^(1/x)), (-5,5))

Which emits:

verbose 0 (2493:, generate_plot_points) WARNING: When plotting, failed to evaluate function at 100 points.
verbose 0 (2493:, generate_plot_points) Last error message: 'negative number cannot be raised to a fractional power'

and only plots to the right of 0 on the positive side.

My professor's TI Voyager 200 plots a similar graph to what wolframAlpha emits:

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The question is similar to the post "How to plot correctly these two simple exponential functions?" on Sept 29 ( See what you think of that explanation.

dazedANDconfused gravatar imagedazedANDconfused ( 2014-10-07 06:37:03 +0200 )edit