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Question Number 211896 by Spillover last updated on 23/Sep/24

Answered by BHOOPENDRA last updated on 23/Sep/24

$$=-\frac{1}{2}(Re\underset{z=0}{s}\left(f\left(z\right)\right)+Res\underset{z=-1}{}\left(f\left(z\right)\right))$$$$=-\frac{1}{2}(2n-\frac{2}{3}(2n^2+1))$$$$=\frac{2n^2-3n+1}{3}$$$$=\frac{2n^2-n-2n+1}{3}$$$$=\frac{(2n-1)(n-1)}{3}$$

Commented by Spillover last updated on 23/Sep/24

$$thanks.$$

Answered by Spillover last updated on 24/Sep/24

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