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If |z|=1 and w=(z-1)/(z+1) (where z ne -...

If `|z|=1` and `w=(z-1)/(z+1)` (where `z ne -1`), then `Re (w)` is :

A

`0`

B

`-(1)/(|z+1|^(2))`

C

`|(z)/(z+1)|(1)/(|z+1|^(2))`

D

`(sqrt(2))/(|z+1|^(2))`

Text Solution

Verified by Experts

The correct Answer is:
A
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