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complex variable

  • To: mathgroup at
  • Subject: [mg20754] complex variable
  • From: Biao Wu <bwu at>
  • Date: Wed, 10 Nov 1999 00:17:59 -0500
  • Sender: owner-wri-mathgroup at

Hi, all

  I have a question: how to define a symbolic variable as real or complex
explicitly? This is related to what I want to do. In math, if I do
   z=x+I*y; Im[z]

what I get is 


instead of what I want


If I can define "x" and "y" explicitly as real variables, I should be 
able to do this. Or is there any other way to do it?


Wu, Biao                            

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