The function .
Theorem :
\Any rational function is continuous at every number on its domain.
\Numerator: The domain of the trigonometric function is
and it is continuous in its domain.
Denominator: The domain of root function is
and it is continuous in its domain.
Domain :
\All possible values of is the domain of the function.
The function under the root should be greater than zero.
\The function is continuous at every number in its domain.
Domain of the function is
.
Domain of the function is .