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Math Help - Determine whether f and g are inverses of one another

  1. #1
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    Determine whether f and g are inverses of one another

    Originally Posted by renebran
    Use composition of functions to determine whether f and g are inverses of one another.
    f(x)=3x;g(x)=1/3x

    Use composition of functions to determine whether f and g are inverses of one another.
    f(x)=3x;g(x)=
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  2. #2
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    Quote Originally Posted by renebran View Post
    Originally Posted by renebran
    Use composition of functions to determine whether f and g are inverses of one another.
    f(x)=3x;g(x)=1/3x

    Use composition of functions to determine whether f and g are inverses of one another.
    f(x)=3x;g(x)=
    f and g are inverse if and only if f(g(x))= x and g(f(x))= x. Have you tried that?

    Please don't post the same question repeatedly!
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    Quote Originally Posted by HallsofIvy View Post
    f and g are inverse if and only if f(g(x))= x and g(f(x))= x. Have you tried that?

    Please don't post the same question repeatedly!

    I get the concept, I just don't understand how to work it out. I know you substitute it in.
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