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# HELP

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Let $$f(x) = (x+2)^2-5$$. If the domain of $$f$$ is all real numbers, then $$f$$ does not have an inverse function, but if we restrict the domain of $$f$$ to an interval $$[c,\infty)$$, then $$f$$ may have an inverse function. What is the smallest value of $$c$$ we can use here, so that $$f$$ does have an inverse function?

Aug 7, 2019