In the previous examples we used inequalities and lists to describe the domain of functions. We can write the domain of f x in set builder notation as x x 0. To find the range is a bit trickier than finding the domain.
In the previous examples we used inequalities and lists to describe the domain of functions.
Set the argument in tanx tan x equal to p 2 pn p 2 p n to find where the expression is undefined. Set the argument in tanx tan x equal to p 2 pn p 2 p n to find where the expression is undefined. Set the denominator to zero. In mathematics the domain of a function f x is the set of all values of x that can be plugged into f x to produce a defined function.