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MathGroup Archive 1997

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Re: Arg and Re instructions

  • To: mathgroup at
  • Subject: [mg9010] Re: Arg and Re instructions
  • From: Paul Abbott <paul at>
  • Date: Wed, 8 Oct 1997 00:05:08 -0400
  • Organization: University of Western Australia
  • Sender: owner-wri-mathgroup at

Maria Chiara Ubaldi wrote:

> Does anybody know if it's possible to operate with Arg and Re obtaining
> symbolic expressions?
> For example, is it possible to have:
> Arg[x+I*2*x^2]=ArcTan[2*x]

But this is not true for negative x?


Paul Abbott                                   Phone: +61-8-9380-2734
Department of Physics                           Fax: +61-8-9380-1014
The University of Western Australia           
Nedlands WA  6907                     mailto:paul at 

            God IS a weakly left-handed dice player

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