What is the domain of f(x)=log10(x2)f(x) = \log_{10}(x^2)f(x)=log10(x2)?
(0,∞)(0, \infty)(0,∞)
(−∞,0)∪(0,∞)(-\infty, 0) \cup (0, \infty)(−∞,0)∪(0,∞)
(−∞,∞)(-\infty, \infty)(−∞,∞)
[0,∞)[0, \infty)[0,∞)