Math Chapter Wise Complex Integration, Cauchy's Theorem And Calculus Of Residue English MCQ UPPSC Polytechnic Lecturer 2021 (I) Q.If C is the unit circle z = 1, ()() C ∫ 2 z 2z +1 z + 2 dz is equal to- A4 i/π B8 i/π Ci 6 π Di 12 π Show answer Correct answer: i 6 π