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Math Help - Do you simplify inverse functions?

  1. #1
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    Do you simplify inverse functions?

    I'm working on an inverse function problem here and I'm not sure which is "more accurate" of an answer.

    if C=g(x)=900+50x
    find g^-1(C)

    My answers are:
    <br />
\frac{C-900}{50}<br />
or \frac{C}{50}-18


    edit - sorry for the mess, hit post instead of preview.
    Last edited by ChrisEffinSmith; February 6th 2009 at 03:57 PM.
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  2. #2
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by ChrisEffinSmith View Post
    I'm working on an inverse function problem here and I'm not sure which is "more accurate" of an answer.

    if C=g(x)=900-50x
    find g^{-1}(C)

    My answers are:
    <br />
\frac{C-900}{50}<br />
or \frac{C}{50}-18


    edit - sorry for the mess, hit post instead of preview.
    these are not correct. you are off by a sign. note that the coefficient of x is negative.

    either form of the answer would be acceptable
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  3. #3
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    Quote Originally Posted by Jhevon View Post
    these are not correct. you are off by a sign. note that the coefficient of x is negative.

    either form of the answer would be acceptable
    eep! in my haste i copied them wrong. i've edited the originals to their correct notation. sorry.
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  4. #4
    is up to his old tricks again! Jhevon's Avatar
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    Quote Originally Posted by ChrisEffinSmith View Post
    eep! in my haste i copied them wrong. i've edited the originals to their correct notation. sorry.
    ok. well, either answer is fine. the function is relatively simple, so worrying about simplifying it to the fullest is not necessary
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