\

Observe the graph:

\

(a) The function $\"\"$ on the interval $\"\"$ .

\

$\"\"$ in set notation $\"\"$ .

\

(b) The function $\"\"$ on the interval $\"\"$ .

\

$\"\"$ in set notation $\"\"$ .

\

$\"\"$

\

(a) $\"\"$ ; $\"\"$ .

\

(b) $\"\"$ ; $\"\"$ .