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BG-MO 2021 Problem 3

    Find all f:R+→R+f:R^+ \rightarrow R^+ such that f(f(x)+y)f(x)=f(xy+1)  ∀x,y∈R+f(f(x) + y)f(x) = f(xy + 1)\ \ \forall x, y \in R^+ @below: https://artofproblemsolving.com/community/c6h2254883_2020_imoc_problems

    Dataset text AI-MO AoPS. Quoted with source.

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