If f: R rarr R such that f(x)=ax+b, a !...

If `f: R rarr R` such that `f(x)=ax+b, a != 0` and the equation `f(x)=f^(-1)(x)` is satisfied by

A

`a=2, b = -1`

B

`a = - 1, b in R`

C

`a=1, b in R`

D

`a = 1, b = -1`

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The correct Answer is:

B

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