Question

Consider the function \(f (x) = x^3 + x + 1\). Let's suppose that it has an inverse \(g\) so that \(g (f (x)) = x\).

What is \(g (3)\)?

Answer 1

g(3) is such that f(x) = 3

3 = x^3 + x + 1

x^3 + x - 2 = 0

x = 1

thus g(3) = 1

Answer 2

i didn't get it