Question

How do you find the inverse of `f(x) = x^3 + 5`?

Answer 1

`f^-1 (x) =root(3)(x-5)`

Explanation:

let y= `x^3 +5`

Interchange y and x and then solve for y as follows:

x= `y^3 +5`

#y^3= x-5

y= `f^-1 (x) =root(3)(x-5)`