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Re: 5 variables Guass isnt working, matrix solution


On 9/4/04 at 1:43 AM, roger at banditorange.com (roger) 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.

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

{{a -> 0.4130434782608696, 
  b -> 0.5217391304347826, 
  c -> 0.5000000000000001, 
  d -> 0.4782608695652175, 
  e -> 0.5869565217391305}}
  
Works fine here. But note the use of Equal, "==" rather than Set, "="
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