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Let f(x)=ax+b, a lt 0, then f^(-1)(x)=f(...

Let `f(x)=ax+b, a lt 0`, then `f^(-1)(x)=f(x)AA x ` if and only if

A

`a in -1, b in R`

B

`a=-2, b =4`

C

`a=-3, b in R`

D

none of these

Text Solution

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The correct Answer is:
A
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