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# Functions

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The function $$f(x) = \frac{cx}{2x+3}$$satisfies $f(f(x))=x$ for all real numbers $x\ne -\frac 32$. Find $c$.

Guest Jun 21, 2017
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https://web2.0calc.com/questions/i-have-2-questions#r1

CPhill  Jun 22, 2017