Which of the following equations is the inverse of the function y=2x^3

Question

A. y^-1 = x^3/2

B.  y^-1 = 3√x/2

C. y^-1 = 3√2x

D. y^-1 = (x/2)^3

Answer 1

First switch X and Y

 

x = 2y^3

 

Solves for y:

 

 x/2 = y^3

 

y = cube root (x/2)

 

B