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(3) If z = a + ib E C and |2| := Va² + b², prove that |zw| = |z||w]. Proof. Proof here. goes (4) Let y : C× → R* be defined b

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3. zzatib EC 12l = Ja²76 Let w=ctid EC Then I zwl=1 Carib) (etid) = lac-bd) ti(betad) I = √(ac-band) 7 (bet ad)? - Mãe 16de z

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