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Re: Inequalities


Exactly what did you type, and with which version of Mathematica?  Did 
you remember to include the x as 2nd argument?

In Mathematica 6.0:

   Reduce[-10<=3x+2<=10,x]
-4 <= x <= 8/3

   FindInstance[-10<=3x+2<=10,x]
{{x -> 0}}


Bruno Campanini wrote:
> -10 <= 3x+2 <= 10
> 
> I tried with FindInstance and Reduce but was unable to
> get the right range solution  -4 <= x <= 8/3
> 
> Any suggestions.
> 
> Bruno
> 

-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.
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University of Massachusetts                413 545-2859 (W)
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