Re: How to use inequalities with Solve?
- To: mathgroup at smc.vnet.net
- Subject: [mg5771] Re: How to use inequalities with Solve?
- From: Daniel Lichtblau <danl>
- Date: Sat, 18 Jan 1997 14:58:27 -0500
- Organization: wolfram.com
- Sender: owner-wri-mathgroup at wolfram.com
Michael Hucka wrote:
> OK, this is probably a stupid question, but I just can't seem to get it
> right. I have a hairy expression that I'm trying to get Mathematica to solve
> using Solve (or Reduce), and in an effort to reduce the number of results,
> I'd like to express that certain variables are greater than zero. Apparently
> I can't use the obvious thing:
> Solve[ expr == 0 && a > 0 && b > 0, x]
> Is there some other way to achieve the same effect? Seems like there *ought*
> to be a way.
> Mike Hucka hucka at umich.edu <URL: http://ai.eecs.umich.edu/people/hucka>
> Ph.D. candidate, computational models of human visual processing, U-M AI Lab
> UNIX admin & programmer/analyst, EECS Dept., University of Michigan
Solve and Reduce will not take inequalities.
In version 3.0 there is a standard package, Algebra`InequalitySolve`,
that may do what you want.
danl at wolfram.com
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