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Functions Part 1

Section: Mathematics
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Question : 53 of 100
 
Marks: +1, -0
For a suitably chosen real constant a, let a function, f:R−{−a}→R be defined by f(x)=
a−x
a+x
. Further suppose that for any real number x≠−a and f(x)≠−a,(fof)(x)=x. Then f(−
1
2
) is equal to :
[6 Sep 2020 Shift 2]
Validate
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