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+1 vote
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in Limit, continuity and differentiability by (52.5k points)

A derivable function f: R+→ R satisfies the condition f(x) - f(y) ≥ ln(x/y) + x - y for  every x, y ∈ R+. If g denotes the derivative of f then compute the value of the sum ∑g(1/n) for n∈[n=1, 100]. 

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Best answer

f(x) - f(x) ≥ ln(x/y) + x - y

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