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MathGroup Archive 1996

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Replacement Rule

  • To: mathgroup at smc.vnet.net
  • Subject: [mg3887] Replacement Rule
  • From: TTCJ34A at prodigy.com (DR JOHN C ERB)
  • Date: Sat, 4 May 1996 23:22:06 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

Ram asked

>Hi,
>I was wondering if anyone could tell me how to deal with this 
problem.
>I want to assign the numerical result that I obtain from the Solve 
or etc. 
>command, which typically enclosed in the braces ({...}) to a 
variable
>so that I can reuse it. I just want the numerical number, not the 
braces.
>Can you tell me how? I appreciate all the help from you. Thank you 
very much.

Try using the Replacement Rule: /.

For Example:

Solve[x^2+3x+2==0];
{x1,x2}=x/.%;

You will find x1=-2, and x2=-1.

Regards,
John C. Erb




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