Evaluate limn→∞∑k=1nk2n3+k3\lim_{n \to \infty} \sum_{k=1}^n \frac{k^2}{n^3 + k^3}limn→∞∑k=1nn3+k3k2.
13ln2\frac{1}{3} \ln 231ln2
∞\infty∞
ln2\ln 2ln2
111