i computed $|x|<e$ by using $\lim\limits_{n\to\infty}\bigg |\frac{a_{n}}{a_{n+1}}\bigg |$. But shouldn't there be more solutions since $x\in \mathbb{C}$?
2026-04-03 06:57:00.1775199420
Radius of convergence of $\sum_{n=0}^{\infty}{\frac{n!}{n^n}}x^n$ and $x\in \mathbb{C}$
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