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    krhoades's Avatar
    krhoades Posts: 1, Reputation: 1
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    #1

    May 11, 2009, 03:33 PM
    finding the domain
    f(x) = (x-2)/(x-4)

    g(x) = 3/(x-5)

    find the domain
    Perito's Avatar
    Perito Posts: 3,139, Reputation: 150
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    #2

    May 11, 2009, 03:36 PM


    For the first one, the domain is (-infinity , 4) U (4 , +infinity) (all real numbers except 4)
    For the second one, the domain is (-infinity , 5) U (5 , +infinity) (all real numbers except 5)

    do you understand why 4 and 5, respectively, are not included in the domain? It's simply because dividing by zero is not defined.
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