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