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Divergence, Calc III

  1. Nov 24, 2011 #1
    1. The problem statement, all variables and given/known data

    Let r = x i + y j + z k and R = |r|. Let F = r/R^p.

    find div(F) in terms of r.. i can't figure out how to express it in therms of r

    2. Relevant equations

    div(F) = the gradient added together
     
  2. jcsd
  3. Nov 24, 2011 #2
    First: express F in terms of x,y,z
    Second: Compute the divergence of F by hand
    Third: try to identify r in div F
     
  4. Nov 24, 2011 #3
    hahaha sweet.. i figured it out. I was thinkin it was just too complicated but when you replace all the stuff with r it works out nicely.

    thanks!
     
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