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Thread: I need HELP

  1. #1

    Unhappy I need HELP

    I just started calc I and have not had math in 5 yrs. I'm a little rusty. Here's my problem and how far I have gotten. I can't remember what to do next.

    f(x)= 1/x
    Simplify as much as possible: (f(x+h)-f(x))/h
    here's what i did next:
    (1/(x+h) - 1/x)/h

    This is where I got stuck. Any help would be appreciated!!

    Thanks, Missy
    Last edited by countrygrl; Sep 11th 2005 at 12:13 PM. Reason: fixed function
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  2. #2
    Junior Member hoeltgman's Avatar
    Aug 2005
    Why didn't you go on where you were? It was right.

    Just add the both terms above the fraction by finding the CD, then factorize and finally just simplify your result.
    Then you get:

     $ \dfrac{- 1}{x(x + h)} $
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