If f n -1-n2 n-12 n-2 - -2 n-n1 - n- then n - lim n f n equalsA- 4 - eB- 27 - 4 eC- 4 eD- 27 e - 4

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Derivative of One Function w.r.t Another

If f n =1/n2 ...

Question

If f(n)=

4/e

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27/4e

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27e/4

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f (n) = \frac{1}{n} {(2 n + 1) (2 n + 2) \dots (2 n + n)}^{1 / n}

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S_{1}, S_{2}, S_{3} \dots \dots, S_{n}, \dots

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