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The inverse of a function is given by \(f^{-1} : x \to \frac...

The inverse of a function is given by f1:xx+14.

A.

f:x4x1

B.

f:x4x+1

C.

f:x4x14

D.

f:xx12

Correct answer is A

The inverse of the inverse of a function gives the function 

i.e f1(f1(x))=f(x)

f1(x)=x+14

Take y = x, so

f1(y)=y+14

Let x=f1(y),

x=y+144x=y+1

y=f(x)=4x1