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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: [mg50468] RE: [mg50456] 5 variables Guass isnt working, matrix solution
  • From: "David Park" <djmp at earthlink.net>
  • Date: Sun, 5 Sep 2004 03:53:44 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

What's the problem?

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

Solve[eqns]

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

David Park
djmp at earthlink.net
http://home.earthlink.net/~djmp/ 

From: roger [mailto:roger at banditorange.com]
To: mathgroup at smc.vnet.net

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.




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