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Re: Real Solutions

  • To: mathgroup at smc.vnet.net
  • Subject: [mg95834] Re: Real Solutions
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Wed, 28 Jan 2009 06:32:04 -0500 (EST)
  • Organization: Uni Leipzig
  • References: <glmssi$mkr$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de

Hi,

in

Solve[x == y, y]

with

{{y -> x}}

is it a real solution ? or not ?
It depend on x right ? and for a symbolic
solution it is impossible to give you the
real only solutions if you don't
provide more information.
And Assuming[], Simplify[], FullSimplify[] and
Refine[] should help.

Regards
   Jens



Kowalczyk-Schr=F6der wrote:
> Hi,
> I need only the real solutions from Solve or NSolve. I found a
> complicated way with a lot of "ifs" to get, what I want. Is there an
> easier way to do this? (I don't want to use Reduce.)
> Regards
> J.Schroeder
>


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