Z+3i Let f (z) = and C: |z – 1| = 1. %3D (2z-1)(z+31) Which among the following is true about I J, f(z)dz? | = -2ni Res f(z)|=« O the above is true O None of these I = 2ni Res f(2)\, 1 = 2ni Res f (z)\z=-3i O the above is true O the above is true O I=0 by Cauchy-Gorsat theorem

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