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MathGroup Archive 1996

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declaring variables

  • To: mathgroup at smc.vnet.net
  • Subject: [mg4753] declaring variables
  • From: dh61 at rs3.hrz.th-darmstadt.de (Burkhardt Goedde)
  • Date: Thu, 5 Sep 1996 02:00:04 -0400
  • Organization: Technische Hochschule Darmstadt
  • Sender: owner-wri-mathgroup at wolfram.com

Dear math users,
just a simple problem, but I got no answer from thew book.

Re[x + I y] gives

Re[x + I y]

whereas 

Re[2 + 3 I]

gives 2

How could I tell Mathematica that x and y are real numbers?

thanks
	burkart


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