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MathGroup Archive 2004

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Re: 5 variables Guass isnt working, matrix solution

  • To: mathgroup at smc.vnet.net
  • Subject: [mg50463] Re: [mg50456] 5 variables Guass isnt working, matrix solution
  • From: DrBob <drbob at bigfoot.com>
  • Date: Sun, 5 Sep 2004 03:53:39 -0400 (EDT)
  • References: <200409040543.BAA28057@smc.vnet.net>
  • Reply-to: drbob at bigfoot.com
  • Sender: owner-wri-mathgroup at wolfram.com

{5a - c - d - e == 0.5,
     4b - c - e == 1,
     6c - a - b - d - e == 1,
     4d - a - c == 1,
     5e - a - b - c == 1.5} // Solve

{{a -> 0.413043, c -> 0.5, d -> 0.478261, b -> 0.521739, e -> 0.586957}}

or

{5a - c - d - e == 1/2,
     4b - c - e == 1,
     6c - a - b - d - e == 1,
     4d - a - c == 1,
     5e - a - b - c == 3/2} // Solve

{{a -> 19/46, c -> 1/2,
    d -> 11/23, e -> 27/46,
    b -> 12/23}}

Bobby

On Sat, 4 Sep 2004 01:43:44 -0400 (EDT), roger <roger at banditorange.com> wrote:

> 5a-c-d-e  =0.5
> 4b-c-e    =1
> 6c-a-b-d-e=1
> 4d-a-c    =1
> 5e-a-b-c  =1.5
>
> Solve for a,b,c,d, and e.   Guass inversion isnt working.
>
> Maybe a matrix solution.
>
>
>



-- 
DrBob at bigfoot.com
www.eclecticdreams.net


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