determine whether f and g are inverses of each other 15 SXan

determine whether f and g are inverses of each other

Solution

f(x) = 5x -9

g(x) = (x+5)/9

Plug x= g(x) in f(x) and we should get x

(F og) (x) = 5( x+5)/9 -9

= ( 5x +25 -81)/9

= (5x- 56)/9

So, we dont get x after simplification

So, f and g are not inverse of each other