$\"\"$

The conditions are $\"\"$ and $\"\"$ .

Determine differential functions $\"\"$ and $\"\"$ that satisfiy the specified conditions.

Let $\"\"$ and $\"\"$ .

Find $\"\"$ .

$\"\"$ .

Find $\"\"$

$\"\"$ .

Find $\"\"$

$\"\"$

$\"\"$ .

Thus the condition are satisfied.

$\"\"$

Let $\"\"$ and $\"\"$ .