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Homework Help: Cross product question.

  1. Sep 22, 2009 #1
    1. The problem statement, all variables and given/known data

    I simply forget how to cross product if you have:

    3(A x B)

    Would it be 3A x B


    A x B then take that result and multiply by 3?
  2. jcsd
  3. Sep 22, 2009 #2


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    r(axb) = (ra)xb = ax(rb)

    I believe it works like that for r=constant.
  4. Sep 22, 2009 #3
    Thank you that was my original thought.
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