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Re: Graphing Functions

  • To: mathgroup at smc.vnet.net
  • Subject: [mg22532] Re: Graphing Functions
  • From: Brian Higgins <bghiggins at ucdavis.edu>
  • Date: Thu, 9 Mar 2000 03:24:20 -0500 (EST)
  • References: <8a51tk$dc7@smc.vnet.net>
  • Sender: owner-wri-mathgroup at wolfram.com

In article <8a51tk$dc7 at smc.vnet.net>,
  "Julian P. Charko" <jcharko at telusplanet.net> wrote:
> As a relative novice in Mathematica, I need help with a very basic
> problem involving the graphing of a certain function.
>
> The function in question is:
>
>                                                           x^(1/3) -
> x^(2/3).
>
> The plotting function Plot[f, xmin, xmax] seems unable to deal with
cube
> roots of negative fractional real numbers.
>
> Please let me know how I can obtain a plot of the above function over
> the real number line from say,  from x = -10 to x = 10.
>
> Thank you.
>
> Julian
>
> e-mail address: jcharko at telusplanet.net
 J

Julian,

Try this

Plot[Re[x^(1/3) - x^(2/3)], {x, -3, 3}]


Brian


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