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Re: Solving on mathematica

  • To: mathgroup at smc.vnet.net
  • Subject: [mg88531] Re: Solving on mathematica
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Wed, 7 May 2008 07:10:37 -0400 (EDT)
  • Organization: Uni Leipzig
  • References: <fvpctc$mkh$1@smc.vnet.net>
  • Reply-to: kuska at informatik.uni-leipzig.de

Hi,

and where is the dependence on "i" ? Or do you think
that the symbol Xi depend on i like "Chris" depend on s ??

And NSolve[] is for the case where you have numerical values.

And to find the variables U, V, W, B you need 4 (four) equations
and not only a single one, otherwise you may have an infinite
number of equations and the print out of all the solutions would take
a bit longer.


Regards
   Jens

Chris wrote:
> How would i go about solving this equaiton on mathematica
> 
> (Xi -Ux)^2 + (Yi - Uy)^2 + (Zi - Uz) = (Ri - Cb)
> i = 1,2,3,4
> 
> where we need to find Ux, Uy, Uz, Cb tried a few things and they dont work.
> 
> NSolve[ (Xi - U)^2 + (Yi - V)^2 + (Zi - W)^2 == (Ri - B)^2, {U, V, W, 
>   B}, { i = 1, 2, 3, 4} ]
> 
> any ideas?
> 


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