What is the domain of the function f(x)=log3(x2−4x)f(x) = \log_3(x^2 - 4x)f(x)=log3(x2−4x)?
(−∞,0)∪(4,∞)(-\infty, 0) \cup (4, \infty)(−∞,0)∪(4,∞)
[0,4][0, 4][0,4]
(0,4)(0, 4)(0,4)
R∖{0,4}\mathbb{R} \setminus \{0, 4\}R∖{0,4}