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MathGroup Archive 1997

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Re: Q??: Solve::"eqf": "False is not a well-formed equation

  • To: mathgroup at smc.vnet.net
  • Subject: [mg8547] Re: [mg8516] Q??: Solve::"eqf": "False is not a well-formed equation
  • From: "w.meeussen" <meeussen.vdmcc at vandemoortele.be>
  • Date: Sat, 6 Sep 1997 23:16:14 -0400
  • Sender: owner-wri-mathgroup at wolfram.com

the well formed eqn should contain the variable to solve for:

Solve[{0,0}==x {0.,1.}+{1.,1.}  ,  x]
with {0,0}==x {0.,1.}+{1.,1.} expanded to:

{0, 0} == {1. + 0. x, 1. + 1. x}
or
{0 == 1. + 0. x, 0== 1. x + 1.}
representing a set of two equations.

wouter.

At 02:20 4-09-97 -0400, Gadi Oron wrote:
>Hello all.
>
>I have this strange behaviour of MMA that bugs me:
>
>Solve[{0,0}==x {0.,1.}+{1.,1.}]
>
>gives
>
>Solve::eqf : False is not a well-formed equation.
>
>But...
>
>Solve[False]
>
>gives (normal)
>
>{}
>
>and
>
>Solve[{0,0}==x{0,1}+{1,1}]
>
>gives (!!!)
>
>{}
>
>Can someone clear this point for me? Is there any way to get a {} in the
>first case?
>
>See ya.
>
>
>/\/\/\/\/\/\/\/\/\/\/\/>> Gadi ORON <<\/\/\/\/\/\/\/\/\/\/\/\/\
>| EMAIL :  oron at pmmh.espci.fr   ::::     oron at clipper.ens.fr  |
>| Homepage : http://pmmh.espci.fr/~oron/personal.html         |
>| fido : 2:325/302.8                                          |
>| 		  Soyez braves - be brave.                    |
>/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/\/
>
>
>
>
>
>

Dr. Wouter L. J. MEEUSSEN
eu000949 at pophost.eunet.be
w.meeussen.vdmcc at vandemoortele.be



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