Practice problem
Let f(x)=x+3f(x) = \sqrt{x}+3f(x)=x+3 for all x≥0x \ge 0x≥0. What is the domain of f−1f^{-1}f−1 (where f−1f^{-1}f−1 is the function which satisfies f(f−1(x))=xf(f^{-1}(x)) = xf(f−1(x))=x)?
R\mathbb{R}R
(0,∞)(0, \infty)(0,∞)
[0,∞)[0, \infty)[0,∞)
(3,∞)(3, \infty)(3,∞)
[3,∞)[3, \infty)[3,∞)
Type a concept, like “slope” or “photosynthesis”.