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\\ \\2.38 \\ \\ (a)\ \ \ Izracunajte\ limese: \\ \\ \displaystyle \lim_{n \rightarrow \infty} \Big(n - \frac{(n-a)^{3}}{(n+1)^2}\Big) \\ \\ u\ ovisnost\ o\ parametru\ a \in \mathbb{R}
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