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How are these two equations the same?

  1. Apr 15, 2012 #1



    In particular, why is there a 1/9 beside the limit instead of a 1/8 in the second equation?
    Last edited: Apr 15, 2012
  2. jcsd
  3. Apr 15, 2012 #2
    These are not equations, FYI, they are limits, and as limits they are the same.
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