\

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

\

If $\"\"$ , then $\"\"$ .

\

(a)

\

Find $\"\"$ .

\

Substitute $\"\"$ in $\"\"$ .

\

$\"\"$

\

Even-odd properties: $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

\

(b)

\

Find $\"\"$ .

\

The function $\"\"$ .

\

$\"\"$ .

\

Apply periodic properties: $\"\"$ and $\"\"$ .

\

$\"\"$

\

Substitute $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

\

(a). $\"\"$ .

\

(b). $\"\"$ .