The result is probably that it is undefined but we can say that $\lim\limits_{n \to \infty} (-1)^n \in \{-1, 1\}$. Right? Could we continue the calculation by considering separate cases with $1$ and $-1$ ? This is studied in the case of sequences therefor $n$ is always an integer.
2026-03-28 16:56:45.1774717005
What is $(-1)^\infty$?
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