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MathGroup Archive 2007

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Re: Inequalities

  • To: mathgroup at smc.vnet.net
  • Subject: [mg78064] Re: [mg77978] Inequalities
  • From: János <janos.lobb at yale.edu>
  • Date: Fri, 22 Jun 2007 06:37:15 -0400 (EDT)
  • References: <200706210929.FAA24243@smc.vnet.net>

On Jun 21, 2007, at 5:29 AM, 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

Here is a newbie suggestion:

In[1]:=
Reduce[-10 <= 3*x + 2 &&
    3*x + 2 <= 10, x]
Out[1]=
-4 <= x <= 8/3

J=E1nos


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