\

The functions are $\"\"$ and $\"\"$ .

\

$\"\"$ :

\

All possible values of $\"\"$ is the domain of the function.

\

The function under the square root should not be negative.

\

$\"\"$

\

The domain of $\"\"$ is $\"\"$ .

\

$\"\"$ :

\

All possible values of $\"\"$ is the domain of the function.

\

The function under the square root should not be negative.

\

$\"\"$

\

The domain of $\"\"$ is $\"\"$ .

\

(a)

\

Find $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

All possible values of $\"\"$ is the domain of the function.

\

Domain of $\"\"$ is $\"\"$ .

\

Domain of $\"\"$ is $\"\"$ .

\

So the domain is $\"\"$ and $\"\"$ .

\

The domain of $\"\"$ is $\"\"$ .

\

\

(b)

\

Find $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

All possible values of $\"\"$ is the domain of the function.

\

Domain of $\"\"$ is $\"\"$ .

\

Domain of $\"\"$ is $\"\"$ .

\

So the domain is $\"\"$ and $\"\"$ .

\

The domain of $\"\"$ is $\"\"$ .

\

\

\

(c)

\

Find $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

All possible values of $\"\"$ is the domain of the function.

\

Domain of $\"\"$ is $\"\"$ .

\

Domain of $\"\"$ is $\"\"$ .

\

So the domain is $\"\"$ and $\"\"$ .

\

The domain of $\"\"$ is $\"\"$ .

\

\

\

(d)

\

Find $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

All possible values of $\"\"$ is the domain of the function.

\

Domain of $\"\"$ is $\"\"$ .

\

Domain of $\"\"$ is $\"\"$ .

\

But denominator of the function should not be a zero.

\

$\"\"$

\

So the domain is $\"\"$ and $\"\"$ .

\

The domain of $\"\"$ is $\"\"$ .

\

(a) $\"\"$ , and its domain is $\"\"$ .

\

(b) $\"\"$ , and its domain is $\"\"$ .

\

(c) $\"\"$ , and its domain is $\"\"$ .

\

(d) $\"\"$ , and its domain is $\"\"$ .