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How to find the difference quotient and simplify the answer

  1. Aug 31, 2008 #1
    1. The problem statement, all variables and given/known data

    find the difference quotient and simply your answer.

    f(t)=1/t, [f(t)-f(1)]/t-1, t doesn't equal 1

    2. Relevant equations
    the book says the answer is -1/t, t doesn't equal 1

    3. The attempt at a solution





  2. jcsd
  3. Aug 31, 2008 #2


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    Gold Member

    How did you get that line?
  4. Aug 31, 2008 #3
    i thought that's what you get when you minus t/t from 1/t
  5. Aug 31, 2008 #4
    Nope, you get:


    instead of:

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