Services & Resources / Wolfram Forums
-----
 /
MathGroup Archive
2007
*January
*February
*March
*April
*May
*June
*July
*August
*September
*October
*Archive Index
*Ask about this page
*Print this page
*Give us feedback
*Sign up for the Wolfram Insider

MathGroup Archive 2007

[Date Index] [Thread Index] [Author Index]

Search the Archive

Re: Inequalities

  • To: mathgroup at smc.vnet.net
  • Subject: [mg78056] Re: Inequalities
  • From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
  • Date: Fri, 22 Jun 2007 06:33:07 -0400 (EDT)
  • Organization: The Open University, Milton Keynes, UK
  • References: <f5dghc$nql$1@smc.vnet.net>

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

Hi Bruno,

Are you fooling yourself?

In[1]:=
$Version
ineq = -10 <= 3*x + 2 <= 10;
Reduce[ineq, x]

Out[1]=
5.2 for Microsoft Windows (June 20, 2005)

Out[3]=
            8
-4 <= x <= -
            3

In[1]:= $Version
ineq = -10 <= 3*x + 2 <= 10;
Reduce[ineq, x]

Out[1]= 6.0 for Microsoft Windows (32-bit) (April 20, 2007)

Out[3]=
            8
-4 <= x <= -
            3

Regards,
Jean-Marc


  • Prev by Date: Re: Inequalities
  • Next by Date: HELP IN RECURSIVE ESTIMATION WITH MATHEMATICA
  • Previous by thread: Re: Inequalities
  • Next by thread: Re: Inequalities