Q: Set notation for all real numbers Consider a function,
$$
y=f(x)=2x-\tan x,
$$
where the domain of the function is the interval $\left(-\dfrac{\pi}{2},\dfrac{\pi}{2}\right)$.
I know the range is the set of all real numbers. Thus I state that,
"The range of the function is,
$$
\{y~|~y\in{\rm I\!R}\}.
$$
"
I wish to use set notation to convey this. Keeping this in mind, is there any way my statement can be improved? Regarding the notation, is it correctly used?
