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Re: Mathematica Question


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


"Bharat Bhole" <bbhole at> schrieb im 
Newsbeitrag news:e3shhl$m39$1 at
| 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 
| expression...basically the sign of the second 
derivative of a function.
| Thank you very much for your help.
| Bharat.

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