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1 1 + COS Z 8. Define the function f(x) = (2 + 1)2( 23 +1) (a) (6 points) Find all the singularities of f(z) and classify eac

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[8] (a) Define the function flz) + Z+))?(2341) Cosz + Cos z Honcel Z= -1 (z+15? (z+1)(z-4-1)) (2+413%) (corder 3 packe) 2= 3

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