Question
Mon September 28, 2009 By:

Complex numbers

Expert Reply
Mon September 28, 2009

Ans is (a)

|(1/z1 + 1/z2 + 1/z3)| = 1

|(z1 + z2 + z3)/(z1z2z3)| =1

|(z1 + z2 + z3)| / |(z1z2z3)| =1

|(z1 + z2 + z3)| / (|z1||z2||z3|) =1

|(z1 + z2 + z3)| = 1

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