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MathGroup Archive 2004

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Reduce[] in version 5.1

  • To: mathgroup at smc.vnet.net
  • Subject: [mg52678] Reduce[] in version 5.1
  • From: Gianluca Gorni <gorni at dimi.uniud.it>
  • Date: Thu, 9 Dec 2004 20:22:28 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

Hello!

In Mathematica 5.1 I get the following result from Reduce:

Reduce[{x^2 - y == 2, x + y == 0}, {x, y}]

(x == -2 || x == 1) && y == -x

Sincerely, I preferred the output of version 4.2:

x==-2 && y==2 || x==1 && y==-1

To recover this good old form in 5.1 I have to Reduce[] twice:

Reduce[Reduce[{x^2 - y == 2, x + y == 0}, {x, y}]]

I think wri should work on this for the next version.

Best regards,

Gianluca Gorni


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