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Shouldn't be a 2 in there?

  1. Aug 25, 2007 #1
  2. jcsd
  3. Aug 25, 2007 #2
    no, there shouldnt be a 2 because it cancels with the 2 in the denominator:

    (1/v)[(2x)/(2sqrt(l^2 + x^2))]
  4. Aug 25, 2007 #3
    oh thank you!
  5. Aug 25, 2007 #4
    your welcome
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