$\"\"$

\

(a)

\

The composite function is $\"\"$ .

\

Definition of composite function : $\"\"$ .

\

$\"\"$

\

Observe from the graph : $\"\"$ .

\

$\"\"$

\

Observe from the graph : $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

(b)

\

The composite function is $\"\"$ .

\

$\"\"$

\

Observe from the graph : $\"\"$ .

\

$\"\"$

\

Observe from the graph : $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

(c)

\

The composite function is $\"\"$ .

\

$\"\"$

\

Observe from the graph : $\"\"$ .

\

$\"\"$

\

Observe from the graph : $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

(d)

\

The composite function is $\"\"$ .

\

$\"\"$

\

Observe from the graph : $\"\"$ .

\

$\"\"$

\

Observe from the graph : $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

(a) $\"\"$ .

\

(b) $\"\"$ .

\

(c) $\"\"$ .

\

(d) $\"\"$ .