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Re: Solve problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg98039] Re: Solve problem
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Sat, 28 Mar 2009 05:45:21 -0500 (EST)
  • References: <gqia56$oim$1@smc.vnet.net>

Hi,

Select[{{b1 -> -2, a1 -> -1}, {b1 -> 0.5, a1 -> 3}}, a1 > 0 /. # &]

?

Regards
   Jens

Bruno Campanini wrote:
> I have a Solve[...] which gives me solutions like
> {{b1 -> -2, a1 -> -1 }, {b1 -> 0.5, a1 -> 3}}
> or like
> {{a1 -> 1, b1 -> 3}}
> 
> How can I get the positive value for a1, which is  3
> in the first case and  1  in the second one?
> 
> Bruno
> 


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