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Let RR be the set real numbers and f: RR...

Let `RR` be the set real numbers and `f: RR rarr RR ` be given by `f(x) =ax +2`, for all `x in RR` . If `(f o f) =I_(RR)`, find the value of a

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The correct Answer is:
The requid value of `a=-1`
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