\lim_{n \to \infty} a_n = \lim_{n \to \infty} \sum_{k=1}^{n} \left( \frac{k}{n} - \frac{1}{3} \left( \frac{k}{n} \right)^3 \right)

Sat, 18 Apr 2026 06:01:29 +0000

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