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Let f: RR rarr RR be a function defined ...

Let `f: RR rarr RR` be a function defined by `f(x)=ax+b`, for all `x in RR `. If `(f o f)=I_(RR)`
Find the value of a and b.

Text Solution

Verified by Experts

The correct Answer is:
`a=1 and b=0 or, a=-1 and b= ` any real value
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