I rewrote it like this: $\lim_{n \to \infty }\frac{2011^{\frac{1}{n}}-1}{\frac{1}{n}}$, but don't know how to proceed.

Any ideass? Thanks!


marked as duplicate by hardmath, Davide Giraudo, TooTone, egreg, Nick Peterson Apr 4 '14 at 14:43

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Set $\displaystyle\frac1n=h,$

finite for $a>0$

$$\lim_{n\to\infty}n\left(\sqrt[n]a -1\right)=\lim_{h\to0}\frac{a^h-1}h$$

Now we know $\displaystyle\lim_{y\to0}\dfrac{e^y-1}y=1$ and $\displaystyle a^h=(e^{\ln a})^h=e^{h\cdot\ln a}$


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