s_nfracsqrtn2n2 n 20 let to ensure that which is a sequence that conve
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20) Let s_{n}=\frac{\sqrt{n^{2}+n}}{2 n} which is a sequence that converges to . How large does n need to be to ensure that \left|s_{n}-\frac{1}{2}\right| \leq \frac{1}{10} ?