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Omni-MATH / Find all real a, such that there exist a function f:R→R satisfying the following inequality: xplusaf(y)leq yplusf(f(x)) for all x,y∈R · Discussion

Discussing Find all real a, such that there exist a function f:R→R satisfying the following inequality: xplus{}af(y)leq yplus{}f(f(x)) for all x,y∈R · Omni-MATH

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