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MathGroup Archive 2001

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Re: symbolic calculations with complex numbers

  • To: mathgroup at
  • Subject: [mg31958] Re: [mg31937] symbolic calculations with complex numbers
  • From: Andrzej Kozlowski <andrzej at>
  • Date: Fri, 14 Dec 2001 04:21:22 -0500 (EST)
  • Sender: owner-wri-mathgroup at


ComplexExpand[Abs[p+ I q],TargetFunctions->{Re,Im}]


       2    2
Sqrt[p  + q ]

Andrzej Kozlowski
Toyama International University

On Thursday, December 13, 2001, at 03:08  PM, Roberto Dinapoli wrote:

> Hello,
> I've a problem: is there a way to convince mathematica to do symbolic
> calculations and simplifications taking all symbolic variables as real?
> example:
> Abs[p+ I q] is not evaluated, I'd like to see : sqrt[ sqr[p]+sqr[q] ]...
> for all the calculations I have to do it's really important.
> Thanks a lot
> Roberto

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