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Math Help - Composites and Inverse Functions

  1. #1
    Member
    Joined
    Apr 2009
    Posts
    83

    NEED HELP with Piecewise defined functions

    Please help me find the formula for b). I have tried everything already and it is driving me nuts trying to find a formula for this problem.

    So far I have this f(x) = { 1 x > 1
    {1 + x

    f(x) = { 1 x > 1
    {(10)(x) + x

    I understand that the problem is asking for the formula but what I don't get is how to write a formula for it. Every problem is different so how as I suppose to write a general formula for it. Such as if the difference is .99 the maximum the customer would get back is 5 dollars + .99. So that wouldn't be the same for if the difference was .10. Please help me with this.

    Thanks.

    Last edited by krzyrice; February 7th 2010 at 07:31 PM.
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