(a)

The function are $\"\"$ and $\"\"$ . Find a function $\"\"$ such that $\"\"$ .

$\"\"$

Complete the square.

$\"\"$

From the above, it is clear that $\"\"$ .

(b)

The function are $\"\"$ and $\"\"$ .

Find a function $\"\"$ such that $\"\"$ .

$\"\"$

(a) $\"\"$ .

(b) $\"\"$ .