Evaluating Limit $$\frac{\ln2}{2}+\cdots+\frac{\ln n}{n}$$

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SUMMARY

The limit $$\lim_{n \to \infty}\dfrac{\dfrac{\ln2}{2}+\dfrac{\ln3}{3}+\cdots+\dfrac{\ln n}{n}}{\ln^2 n}$$ evaluates to $$\frac{1}{2}$$, contrary to the initial assumption that it approaches 0. The Stoltz-Cesaro theorem was applied correctly to transform the limit into $$\lim_{n \to \infty}\dfrac{\dfrac{\ln (n+1)}{n+1}}{\ln^2 (n+1)-\ln^2 n}$$, which clarifies the behavior of the numerator and denominator as n approaches infinity. The key takeaway is that the limit converges to a non-zero value, specifically $$\frac{1}{2}$$.

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Vali
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Hi,

$$\lim_{n \to \infty}\dfrac{\dfrac{\ln2}{2}+\dfrac{\ln3}{3}+\cdots+\dfrac{\ln n}{n}}{\ln^2 n}.$$
After I applied Stoltz-Cesaro I got $$\lim_{n \to \infty}\dfrac{\dfrac{\ln2}{2}+\dfrac{\ln3}{3}+\cdots+\dfrac{\ln n}{n}}{\ln^2 n}=\lim_{n \to \infty}\dfrac{\dfrac{\ln (n+1)}{n+1}}{\ln^2 (n+1)-\ln^2 n}$$
How to continue ? The limit shouldn't be 0 ? because$\lim_{n \to \infty}\frac{ln(n+1)}{n+1}=0$
It's not 0, it's $1/2$ and I don't know why.
 
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I did it, thanks!
 
Everything is right except the part where the denominator/numerator limits are taken separately (i.e. the very last part).
 

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