The function is
.
Above function is a rational function.
\All possible values of
is the domain of the function.
The denominator of the function should not be the zero.
\The denominator of the expression is a radical expression.
\The expression under the square root (the radicand) must be nonnegative
.
.
Solve the inequality
.


Now there are two ways that this product could be grater than zero both factors are positive or both factors are negative.
\If both factors are positive: 
.
The only condition that both makes true is
.
If both factors are negative: 

The only condition that both makes true is
.
Solution of the inequality is 
Domain set is
.
Domain set is
.