# Determine the singular points of the function

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In each case, determine the singular points of the function and state why the function is analytic everywhere except at those points:

(a) f (z) = (2z + 1) / [z (z^2 + 1)]

(b) f (z) = (z^3 + i) / (z^2 - 3^z + 2)

(c) f (z) = (z^2 + 1) / [(z + 2)(z^2 + 2z + 2)]

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