Prove that:
limn→+∞ (n√2−1)n=0
I would like a solution without integral, limit of real functions or others advanced methods.
I thought \underset{n\rightarrow +\infty }{\overset{}{\lim }} \ 2\left(1- \frac{1}{\sqrt[n]2}\right)^{n} =0 but I don't know how to continue.
Answer
It is a limit of the form
0^{\infty}
so it is not an indeterminate form, it converges to 0.
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