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Grade 10Algebra

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

re(w) ?

Matt Farrel

12 Years agoGrade 10

1 Answer

Arun Kumar

Approved Tutor Answer12 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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