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HELP on an algebra and geometry problem

  1. Oct 22, 2005 #1
    the vectors u and v are linearly independent. find s, if vectors (1-s)u - 2/3v and 3u +sv are parallel.

    where u and v are vectors.

    i am totally clueless, even my tutor couldn't solve it.
     
  2. jcsd
  3. Oct 22, 2005 #2

    TD

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    How can you algebraically express that two vectors a and b are parallel?
    Do that for the two vectors you are given (in function of s) and solve for s.
     
  4. Oct 22, 2005 #3
    but u and v are coplanar? XD
     
  5. Oct 22, 2005 #4

    TD

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    Vectors a and b are parallel if there exists a scalair k such that a = kb. Apply that to the two vectors you want to be parallel, and find the s for which this holds.
     
  6. Oct 22, 2005 #5

    Tide

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    You might consider getting another tutor! :)
     
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