Consider the following in respect of a complex number z: 1. \overline{(z^{-1})}=(\overline{z})^{-1} 2. {zz}^{-1}=| {z}|^{2} Which of the above is/are correct? [NDA-I 2021]

UPSC NDA I 2021 Mathematics Solved Paper

Question : 24 of 120

Marks: +1, -0

Consider the following in respect of a complex number z:
1. (z−1)=(z)−1
2. zz−1=|z|2
Which of the above is/are correct?

[NDA-I 2021]

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