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Math Help - Inverses

  1. #1
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    Exclamation Inverses

    Hello! I was doing some math problems... and I have come across something!
    every time i solve f(g(x)) and g(f(x)) they are equal to x.

    what is the relationship between functinos f and g?
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  2. #2
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    Quote Originally Posted by habibixox View Post
    Hello! I was doing some math problems... and I have come across something!
    every time i solve f(g(x)) and g(f(x)) they are equal to x.

    what is the relationship between functinos f and g?
    If f[g(x)] = g[f(x)] = x, then f and g are inverses.
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  3. #3
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    Quote Originally Posted by skeeter View Post
    If f[g(x)] = g[f(x)] = x, then f and g are inverses.
    thank you!
    I have one more question. For a function to have an inverse, it has to pass the vertical and horizontal tests right?
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  4. #4
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    For a relation to be a function it has to pass the vertical line test. For a relation to have an inverse it has to be a one to one function.
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