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

If `|z|=1` and `w=(z-1)/(z+1)` (where `z!=-1),` then `R e(w)` is 0 (b) `1/(|z+1|^2)` `|1/(z+1)|,1/(|z+1|^2)` (d) `(sqrt(2))/(|z|1""|^2)`

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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