Question: Suppose that f: R (0, ) is differentiable, that f(x) 0 as x , and that exists. If a := lim xf,(x) 00 f(x)

Suppose that f: R †’ (0, ˆž) is differentiable, that f(x) †’ 0 as x †’ ˆž, and that
Suppose that f: R †’ (0, ˆž) is differentiable, that

exists. If a

:= lim xf,(x) 00 f(x)

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