b) Using the Residue Theorem (or otherwise) compute the follo- -wing integrals (all the curves are positively oriented; state all the theorems / propositions that are used in the solution) 2²1dz √ že z dz iii) ! (2-1)² = (2+1)² (i) S 121=12²2²-22 121=1 12-1-11 = 2

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