Maximize $W(x) - (\ln(x) - \ln{\ln{x}})$

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How can you maximize $f(x) = W(x) - (\ln(x) - \ln{\ln{x}})$ for $x\geq 2$?

Numerically the answer seems to be at around $x \approx 41$ where you get $f(41) \approx 0.31$. Mathematica suggests the maximum is at $x= e^{1+e}$.

$W$ is the Lambert-W function.

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Using the fact that

$$ W'(x) = \frac{W(x)}{x(1+W(x))} $$

we calculate

$$ f'(x) = \frac{W(x)+1-\ln x}{x\ln x(1+W(x))}, $$

so to optimize $f$ we want to solve the equation

$$ W(x)+1 = \ln x. $$

Exponentiating both sides yields

$$ e e^{W(x)} = x, $$

and after multiplying both sides by $W(x)$ this becomes

$$ e W(x) e^{W(x)} = x W(x). $$

Since $W(x)e^{W(x)} = x$ this is equivalent to

$$ ex = xW(x) $$

or just

$$ W(x) = e. $$

Thus

$$ x = ee^e = e^{1+e}. $$

Plugging this back into the function we get

$$ f(e^{1+e}) = \ln(1+e) - 1. $$