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Homework Help: Linear solution

  1. Aug 2, 2010 #1
    1. The problem statement, all variables and given/known data

    (x,y,z)=(a,a,b)+(c,d,d)

    to make (a,a,b)+(c,d,d) in terms of x,y,z

    2. Relevant equations

    n/a

    3. The attempt at a solution

    (x,y,z)=(a+c,a+d,b+d)

    then

    a=c-x=d-y

    b=z-d

    c=x-a

    d=z-b

    ,,,

    there's no free independent variable if i want to use parametric, it only make it tedious T_T,

    gimme any clue
     
  2. jcsd
  3. Aug 2, 2010 #2
    hey wait,

    can i use like this

    a+0b+c+0d=x
    a+0b+0c+d=y
    0a+b+0c+d=z

    try to turn it in row echelon form, lemme try first hoho
     
  4. Aug 2, 2010 #3
    nop, i still can't find independent variable, help anyone
     
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