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If z is a complex number such that |z|=1...

If z is a complex number such that `|z|=1, z ne 1`, then the real part of `|(z-1)/(z+1)|` is

A

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

B

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

C

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

D

4)0

Text Solution

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The correct Answer is:
D
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