Answer
The domain of the given function is the set of all real numbers except 0.
Work Step by Step
When the question asks for the domain of the function, it is asking for what values of x can be legally substituted into the function. (For instance, in the function $\frac{2}{x}$, x $\ne$ 0, for this would make the denominator of the fraction equal to 0.)
Find the number that makes the denominator zero by equating the denominator to zero:
$2x=0
\\x=\frac{0}{2}
\\x=0$
Thus, the denominator is equal to zero when $x=0$.
Therefore, the domain of the given function is the set of all real numbers except 0.