Question

the fundtion f is one to one. find its inverse:
f(x)=cube root (x+3)
please show me step by step:). thanks....

Answer 1

x = cube root (y+3)

x^3 = y+3

y = x^3-3

Answer 2

y=cubert(x+3)

swap the y and the x variable
x=cubert(y+3)

cube either side (so you can get rid of that cube root)
x^3=[cubert(y+3)]^3

the 3rd power and cube root cancel out
x^3=y+3

solve for y

y=x^3-3