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parameter restrictions

• To: mathgroup at smc.vnet.net
• Subject: [mg32428] parameter restrictions
• From: "soso lala" <sosolala at hotmail.com>
• Date: Sat, 19 Jan 2002 19:03:27 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

Hi

I am using Mathematica 4.0 and have a question about parameter restrictions. 
How can I define the range of values of a parameter, e.g. that alpha must be 
positive or that (alpha + beta) must be less than unity?

Although it may be a very simple question (and/or answer) I would be 
delighted if I get an answer.

Thanks a lot

Jack




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