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MathGroup Archive 1995

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Re: Imaginary ...

  • Subject: [mg2490] Re: [mg2430] Imaginary ...
  • From: jesroj at wmatem.eis.uva.es (Jesus ROJO)
  • Date: Wed, 15 Nov 1995 06:57:17 GMT
  • Approved: usenet@wri.com
  • Distribution: local
  • Newsgroups: wri.mathgroup
  • Organization: Wolfram Research, Inc.
  • Sender: daemon at wri.com ( )



Hello,

Try  ComplexExpand. Start reading  ?ComplexExpand  at
the terminal. But be careful. For instance, if
	f:=a+I b
then
	In[]:= Sqrt[f*Conjugate[f]//ComplexExpand]
	Out[]= Sqtr[a^2+b^2]
but
	In[]:= Sqrt[f*Conjugate[f]]//ComplexExpand
	Out[]= Sqrt[(a+I b) Conjugate[a+I b]]

Sincerely,
			   Jesus ROJO
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