MathGroup Archive 1996

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Beginner-type question

  • To: mathgroup at
  • Subject: [mg4028] Beginner-type question
  • From: lopez at (Rob Lopez)
  • Date: Mon, 20 May 1996 02:14:51 -0400
  • Organization: University of Chicago -- Academic Computing Services
  • Sender: owner-wri-mathgroup at

I often encounter output of the form
	Out[1]= Sqrt[a^2] ,
where I know a is real and positive, and therefore would like to see
	Out[1]= a .
How do I get Mathematica to assume that all quantities are real? Real
and positive? Can this be done globally, for an entire session?

Thanks in advance.

Rob Lopez
Department of Physics
University of Chicago


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