What is the range of f(x)=1x−3f(x) = \frac{1}{x-3}f(x)=x−31?
R\mathbb{R}R
R∖{0}\mathbb{R} \setminus \{0\}R∖{0}
R∖{3}\mathbb{R} \setminus \{3\}R∖{3}
(0,∞)(0, \infty)(0,∞)