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Finding a limit

  1. Nov 12, 2006 #1
    I'm trying to find a limit for this equation:


    Now I understand I can factor (1-1/k^2) and look for cancellation, but I just can't figure out how to do that in this case.
  2. jcsd
  3. Nov 12, 2006 #2


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    Homework Helper

    Do the (a² - b²) = (a-b)(a+b) bit, then substitute in values of k and write down the first few terms multiplied together.
    You will see the cancelling out.
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