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|z|=1 w=(z-1)/(z+1) re(w) ?

|z|=1
w=(z-1)/(z+1)
re(w) ?

Grade:11

1 Answers

Arun Kumar IIT Delhi
askIITians Faculty 256 Points
8 years ago
Hello Student,

\\w={z-1 \over z+1} \\=>z={w+1 \over w-1} \\=>|w+1|=|w-1| \\$squaring both sides$ \\4|w|Re(w)=0 \\=>Re(w)=0
Thanks & Regards
Arun Kumar
Btech, IIT Delhi
Askiitians Faculty

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