$\"\"$ .

\

\

$\"\"$ .

\

The product rule : $\"\"$ .

\

$\"\"$ .

\

\

Power rule of derivative : $\"\"$

\

$\"\"$

\

$\"\"$ $\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$ is $\"\"$ .