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 .