integrate e^z/(1-cosz) dz over circle of radius, say 2(adsbygoogle = window.adsbygoogle || []).push({});

i can't seem to recall how it is done.

singularity at z=0

2*pi*i * res (at z=0) would be the solution

any shortcut to find this residue?

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# Remind me how to do this complex integral

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