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Question Number 213499 by issac last updated on 06/Nov/24

∫_0 ^( 2π) ((z∙sin(z))/(1+cos^2 (z)))dz =? (contour integral)  pls help.....

$$\int_{\mathrm{0}} ^{\:\mathrm{2}\pi} \frac{{z}\centerdot\mathrm{sin}\left({z}\right)}{\mathrm{1}+\mathrm{cos}^{\mathrm{2}} \left({z}\right)}\mathrm{d}{z}\:=?\:\left(\mathrm{contour}\:\mathrm{integral}\right) \\ $$$$\mathrm{pls}\:\mathrm{help}..... \\ $$

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