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Re: Mathematica Question

• To: mathgroup at smc.vnet.net
• Subject: [mg66366] Re: Mathematica Question
• From: "Jens-Peer Kuska" <kuska at informatik.uni-leipzig.de>
• Date: Thu, 11 May 2006 02:14:10 -0400 (EDT)
• Organization: Uni Leipzig
• References: <e3shhl$m39$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

Hi,

FullSimplify[Positive[x^2], Element[x, Reals] && x 
!= 0]

Regards
  Jens

"Bharat Bhole" <bbhole at gmail.com> schrieb im 
Newsbeitrag news:e3shhl$m39$1 at smc.vnet.net...
| Hello:
|
| Is there a way in Mathematica to check whether 
an algebraic expression is
| positive or negative, and a way to specify 
conditions on the variables in
| the expression? For example, is there a way to 
check whether x^2 is positive
| for any real x? I want to check this for a 
complicated
| expression...basically the sign of the second 
derivative of a function.
|
| Thank you very much for your help.
|
| Bharat.
|
|