Question 4 (Unit E3) - 17 marks This question concerns the following exercise. Exercise For each of the following mappings, determine whether or not it is a homomorphism, justifying your answer. (i) $1 : (C, +) - (C, +) (ii) 62 : (C', x) - (R*, x ) 2 (Rez+ Im z)2 (iii) $3 : (C, +) - (R, +) : Rez + Im z