Question

Given f(x) = 7xº, find f^-1 (x). Then state whether f^-1(x) is a function.

Answer 1

a) (x/7)^1/9=y

Explanation:

f(x) = 7x^9

x/7= 7y^9/7

(x/7)^1/9=(y^9)^1/9

(x/7)^1/9=y

f^-1(x) is a fuction because it passes the vl test