For f(x) = √(x + 5) + 2, what is the domain of f^-1?

Answer 1

The domain of f^-1(x) is the range of f(x).

Since √(x+5) ≥ 0, the range of f(x) = √(x+5) + 2 is [2, ∞).

So, the domain of f^-1(x) is [2, ∞).