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Homework Help: Linear algebra: Vectors

  1. Sep 14, 2009 #1
    1. The problem statement, all variables and given/known data

    Which of the following vectors in R^6 are parallel to u= (-2, 1, 0, 3, 5, 1)?

    a) (4,2,0,6,10,2)
    b) (4,-2,0,-6,-10,-2)
    c) (0,0,0,0,0,0)

    I don't even know how to approach this. Can anyone help me please?

  2. jcsd
  3. Sep 14, 2009 #2
    Vectors A and B are parallel if A dot B = |A||B|. So....
  4. Sep 14, 2009 #3


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    Homework Helper

    or vectors are parallel if:
    a = kb for some k

    so write this a set of equations & see if they are consistent
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