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Q11Section A (Section A)11 of 60

Limit of a Riemann sum

lim⁡n→∞6n+2{(2+1n)2+(2+2n)2+⋯+(2+n−1n)2}\lim_{n\to\infty} \frac{6}{n+2} \left\{\left(2+\frac{1}{n}\right)^2 + \left(2+\frac{2}{n}\right)^2 + \dots + \left(2+\frac{n-1}{n}\right)^2\right\} equals

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