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Re: Assumptions i Mathematica...

• To: mathgroup at smc.vnet.net
• Subject: [mg25715] Re: [mg25660] Assumptions i Mathematica...
• From: BobHanlon at aol.com
• Date: Thu, 19 Oct 2000 04:35:38 -0400 (EDT)
• Sender: owner-wri-mathgroup at wolfram.com

In a message dated 10/18/2000 3:28:51 AM, Whammer.antispam at post9.tele.dk 
writes:

>I'm quite new at this, and I havn't been able to figure out how to tell
>Mathematica to assume that a variable, x, is positive. I have a function,
>f(x), where I only want to consider positive values of x. I'm using version
>3.0.

f[x_?Positive] := x^3;


Bob Hanlon