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1)For the function f(z)=(z^2-2z)/((z+1)^2(z^2+4), find the residule at z=-2i. Hence find the integral of this function around a closed circular contour centred at the point zo=-2i,with radius1.
2)Identify all the singularities of the following function and fin the correspnding residues:
(i)f(z)=(z^2+1)/z^3
(ii) f(z)=(z-1)e^(i/z)
Many thanks:)
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