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Math Help - evaluate (FoG)^-1(3)

  1. #1
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    Question evaluate (FoG)^-1(3)

    From the information in the table providing values of f(x) and g(x), evalute (FoG)^-1(3).

    Table:

    x 1 2 3 4 5
    f(x) 5 3 5 1 2
    g(x) 4 5 1 3 2

    My answer is 4, but not sure, thanks for any help given.
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  2. #2
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    Quote Originally Posted by kwtolley
    From the information in the table providing values of f(x) and g(x), evalute (FoG)^-1(3).

    Table:

    x 1 2 3 4 5
    f(x) 5 3 5 1 2
    g(x) 4 5 1 3 2

    My answer is 4, but not sure, thanks for any help given.
    If x=(f\circ g)^{-1}(3), then (f\circ g)(x)=3, or:

    <br />
f(g(x))=3<br />
,

    g(x)=f^{-1}(3)=2

    x=g^{-1}(2)=5.

    RonL
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  3. #3
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    Smile answer

    thanks I thought I was wrong.
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