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Homework Help: Looking for help with physics vectors

  1. Nov 27, 2008 #1
    The problem statement, all variables and given/known data

    Let v = (-1,2,5) Find all scalars k such that llkvll = 4



    3. The attempt at a solution

    I don't know what to do plz help
    1. The problem statement, all variables and given/known data



    2. Relevant equations



    3. The attempt at a solution
     
  2. jcsd
  3. Nov 27, 2008 #2

    gabbagabbahey

    User Avatar
    Homework Helper
    Gold Member

    Re: Vectors

    v = (-1,2,5), so kv=___? And therefor ||kv||=__?
     
  4. Nov 28, 2008 #3

    Mark44

    Staff: Mentor

    Re: Vectors

    Also, || kv || = |k| ||v||
     
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