$\"\"$

\

The function is $\"\"$ and the point is $\"\"$ .

\

$\"\"$

\

Apply derivative on each side with respect to $\"\"$ .

\

$\"\"$

\

Apply quotient rule of differentiation: $\"\"$ .

\

In this case $\"\"$ and $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

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

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

The derivative of the function at $\"\"$ is $\"\"$ .

\

$\"\"$

\

Graph :

\

Graph the function $\"\"$ .

\

$\"\"$

\

Observe the graph:

\

The derivative function of $\"\"$ at $\"\"$ is $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

The derivative of the function at $\"\"$ is $\"\"$ .