NDA Math Functions

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Question : 41 of 60
 
Marks: +1, -0
Let f(a)=
a−1
a+1

Consider the following:
1. f(2a)=f(a)+1
2. f(‌‌
1
a
)
=−f(a)

Which of the above is/are correct?
[NDA I 2017]
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