How do you find the domain & range for $y=tan4x$ ?

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Answer 1 · 2015-11-10T14:12:58

domain is all real values.......since it is in form of $tan(y)$ where $y=4x$
and the range $=R-{(2n+1)pi/8}$

domain is clear
range is
$y=R-{(2n+1)pi/2}$
$4x=R-{(2n+1)pi/2}$
$x=R-{(2n+1)pi/8}$

How do you find the domain & range for y=tan4xy=tan4x?