MathGroup Archive 1995

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Re: help

  • To: mathgroup at
  • Subject: [mg2662] Re: help
  • From: carolafb at (Carola Friederike Berger)
  • Date: Sun, 3 Dec 1995 02:54:14 -0500
  • Organization: Graz University of Technology, Austria

Dr. Sergio Miguel Terrazas Porras (sterraza at wrote:
: I have not been able to plot the function x^(1/3) for negative x
: Is there a special function for cuberoot?
: thanks
You can't plot a function which yields imaginary numbers like your function 
(e.g. (-2)^(1/3) gives (-1)^(1/3)* 2^(1/3) which is approximately
	0.629961 + 1.09112 I)
with the simple Plot-Routine in Mathematica. You can either plot the real or
imaginary part or the absolute value with Plot, or you can try Plot3D.
Carola Friederike Berger alias carolafb at

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