if the domain of the function, f, is restricted to x is greater than or equal to 0, which function is the inverse of f? f(x)= 9x^2 - 12, x is greater than or equal to 0

if the domain of the function f is restricted to x is greater than or equal to 0 which function is the inverse of f fx 9x2 12 x is greater than or equal to 0 class=