Question:
A certain function f has inverse function f⁻¹(x) = x³ + 2x
Last updated: 7/16/2022
A certain function f has inverse function f⁻¹(x) = x³ + 2x + 1. Use this to solve for x in the equation 3f(x) - 1 = 5. (Hint: First solve for what number f(x) must be, then use the inverse to find what number x must be.)