Question

If f(x) = 1/1-x, then f inverse x is
(a) 1-x
(b) (x-1)/x
(c) x/(x-1)
(d) none of these​

Answer 1

Answer:

(b) (x-1)/x

Step-by-step explanation:

let the pre-image of x be a.

so,f(a)=x

1/1-a=x

1-a=1/x

a=1-1/x

a=(x-1)/x

so,

f inverse x=(x-1)/x