## College Algebra 7th Edition

Domain: $(-\infty,0)\cup (0,\infty)$
We need to find the domain of: $k(x)=\ln|x|$ We can't take the log of a negative number (or 0), so: $|x|\gt 0$ $x\gt 0$ or $-x\gt 0$ $x\gt 0$ or $x\lt 0$ In other words, $x$ can be any real number except 0 ($x\neq 0$). Therefore, the domain is: $(-\infty,0)\cup (0,\infty)$.