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Dot and cross product

  1. Feb 6, 2014 #1
    1. The problem statement, all variables and given/known data

    The value of 3i(dot)(jxk)

    2. Relevant equations



    3. The attempt at a solution
    I know the answer is 3, but could someone please explain how to work this problem?
     
  2. jcsd
  3. Feb 6, 2014 #2
    Start by evaluating the cross product. You can go through the matrix and determinants to solve for it, but j x k can be evaluated by just thinking about it -- what vector is perpendicular to both j and k, and follows the right-hand rule?

    Then you can evaluate the dot product by component.
     
  4. Feb 6, 2014 #3
    Ohh! Thank you so much, I get it now :)
     
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