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Math Help - f is one-to-one question

  1. #1
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    f is one-to-one question

    How would I solve this?

    f(-12) = 7
    f-1(7) = -12

    and (f(-12))^-1= ______

    How do I solve for (f(-12))^-1? woudn't it be -7?
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  2. #2
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    Quote Originally Posted by killasnake View Post
    How would I solve this?

    f(-12) = 7
    f-1(7) = -12

    and (f(-12))^-1= ______

    How do I solve for (f(-12))^-1? woudn't it be -7?
    It seems you want,
    f^(-1) (f(-12))
    You know that,
    f(-12)=7
    And,
    f^(-1)(7)=-12
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