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MathGroup Archive 2003

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Re: a first-time user question

  • To: mathgroup at
  • Subject: [mg39377] Re: [mg39352] a first-time user question
  • From: Tomas Garza <tgarza01 at>
  • Date: Thu, 13 Feb 2003 04:53:11 -0500 (EST)
  • References: <>
  • Sender: owner-wri-mathgroup at


Plot[x^(2/3), {x, -1, 0}]

Tomas Garza
Mexico City
----- Original Message -----
From: "Ye Hu" <huye at>
To: mathgroup at
Subject: [mg39377] [mg39352] a first-time user question

> I have a simple (supposedly) question...
> I used the following command to draw a plot, but Mathematica could not run
> properly.
> Plot[x^(2/3),{x,-1,0}]
> I know the problem is about calculating (-1)^(1/3) in mathematica.
> (-1)^(1/3) = -1,
> mathematica tries to calculate it numerically and gives complex results
> 0.5+0.8i
> How to solve this problem and restrict the solution to be only real
> Thanks very much.

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