Let f (z) = Let C1 be the circle |2| = 6 in the counter-clockwise direction, C2 the circle z – 7| = 6in the counter- clockwise direction, and finally C3 the square with vertices (10, 10) , (–10, 10) , (–10, – 10)and (10, – 10) in the counter-clockwise direction. 1 What is 2ri | f(2) d2 dz? C1

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