UPSC NDA I 2019 Mathematics Solved Paper

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Question : 71 of 120

Marks: +1, -0

If f ( x )=

x−2

x+2

, x ≠−2, then what is f ‌−1 ( x ) equal to?

[NDA I 2019]

4|x+2|
x−2
x+2
4|x−2|
x+2
x−2
2|1+x|
1−x

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