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Homework Help: Limits of functions with negative exponents

  1. Sep 8, 2010 #1
    1. The problem statement, all variables and given/known data

    lim h->0 [(11+h)^-1 - 11^-1]/h

    2. Relevant equations

    3. The attempt at a solution

    I made the numerator into two fractions with the denominator h. After combining the fractions in the numerator I was left with 121 when I put in 0 for h.
  2. jcsd
  3. Sep 9, 2010 #2


    Staff: Mentor

    You have a sign error. Check your work.
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