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MathGroup Archive 2005

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Re: Displaying Solution in Matrix Form

  • To: mathgroup at smc.vnet.net
  • Subject: [mg61367] Re: [mg61335] Displaying Solution in Matrix Form
  • From: Bob Hanlon <hanlonr at cox.net>
  • Date: Mon, 17 Oct 2005 02:29:31 -0400 (EDT)
  • Reply-to: hanlonr at cox.net
  • Sender: owner-wri-mathgroup at wolfram.com

Clear[F];
var=Flatten[Array[F,{3,4}]];

eqns=Thread[Table[Random[],{12},{12}].var==Table[Random[],{12}]];

F=Partition[var/.NSolve[eqns,var][[1]],3]

{{0.22245209976921965, -0.6879632938162827, -0.3515175961033865}, 
  {0.8055186134912115, -0.4567052693128085, 0.5421511793408135}, 
  {0.7396272893299066, 0.8487900146795265, -0.8927126924057154}, 
  {-0.6061412003926252, 0.48967392351033107, 0.8155749042239686}}

F[[2,3]]

0.5421511793408135


Bob Hanlon

> 
> From: "mathematica newbie" <sheeba.arnold at gmail.com>
To: mathgroup at smc.vnet.net
> Date: 2005/10/16 Sun AM 12:17:51 EDT
> Subject: [mg61367] [mg61335] Displaying Solution in Matrix Form
> 
> Hi,
> 
> I have the 12 linear algebraic equations.
> The solutions are denoted by Fi, j's.
> F1,1 , F1,2, F1,3, F1,4,
> F2,1, F2,2  etc......through F3,4
> 
> I have solved the equations with the NSolve command.
> 
> How can I display this result as a 3x4 matrix, using the solution to
> assign values to the 12 Fi, j's.
> 
> This must be done in a nested
> input that includes the function that solves the equations.
> 
> I'm a mathematica newbie and any help with this is greatly appreciated.
> Thank you!
> 
> 


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