### No Inverse Function for f(x)=ln(x)-exp(x)

Calculus: Let f(x) = ln(x) - exp(x). We show that f(x) has no inverse function by considering 1) end behavior and 2) regions of increasing an decreasing. By restricting the domain, we find an inverse function and approximate f^{-1}(1) and f^{-1}(-3).

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