Question

Find f-1(x) (-1 is an inverse function). Sketch the graphs of y=f(x) and y=f-1(x) on the same coordinate axes.

Answer for f(x)=x^3+1

Answer 1

f(x) = x^3 + 1
y = x^3 +1
x = y^3 +1
x-1 = y^3
cube root) of (x-1) = y
plug in values of x in the function and in the inverse