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2. Letz=33i. (i) Calculate E f%1; + [z] - z. [4 marks] (ii) Express 3 in the form r(cos(l9) + fsi11(9)) with r > 0.

2. Letz=33i. (i) Calculate E f%1; + [z] - z. [4 marks] (ii) Express 3 in the form r(cos(l9) + fsi11(9)) with r > 0. 7r U such that z" is a real number? If yes, what is :1? If not, explain why. [4 marks]

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