Limit as $n\to\infty$ of $n^\frac{\ln(n)}{n}$

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I am trying to solve:

$$\lim_{n\to\infty}n^\frac{\ln(n)}{n}$$


Here's what I did but I am not sure if it's right.

$$S=\lim_{n\to\infty}n^\frac{\ln(n)}{n}$$ $$\implies\ln(S)=\lim_{n\to\infty}\ln\left(n^\frac{\ln(n)}{n}\right)=\lim_{n\to\infty}\frac{\ln^2(n)}{n}$$

Applying L'Hôpital's rule:

$$\begin{align} &\implies\ln(S)=\lim_{n\to\infty}\frac{2\ln(n)}{n} \\ &\implies\ln(S)=\lim_{n\to\infty}\frac{2}{n}=0 \\ &\implies S=1 \\ \end{align}$$

Is this correct and is this an ideal approach? Are there any better alternative approaches to this limit?

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Yes, your proof is fine. Here's another one just for fun, using the squeeze theorem.


The limit is clearly at least $1$. On the other hand, we have for $n$ sufficiently large (e.g. $n \ge 3$):

$$n^{\ln n / n} \le n^{\sqrt{n} / n} = n^{1/\sqrt{n}} = \left(\sqrt{n}^{1/\sqrt{n}}\right)^2.$$

Now using the well-known limit $\lim_{t \to \infty} t^{1/t} = 1$, the result follows.