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Math Help - What is the inverse of this function

  1. #1
    Junior Member
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    What is the inverse of this function

    I don't know how to invert functions like this.


     \begin{cases}\frac{-x^2}{2}+\frac{1}{2} & x\leq 0 \\ \frac{x^2}{2}+\frac{1}{2} & x> 0 \end{cases}
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  2. #2
    MHF Contributor
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    Re: What is the inverse of this function

    make a quick sketch of it and solve for the inverse for $y<\frac{1}{2}$ and for $y\geq \frac{1}{2}$ separately.
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