$\"\"$ \ \

\

The function is $\"\"$ . \ \

\

The values are $\"\"$ . \ \

\

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

\

$\"\"$

\

$\"\"$

\

Substitute $\"\"$ . \ \

\

$\"\"$ .

\

$\"\"$ \ \

\

The function is $\"\"$ .

\

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

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

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

\

$\"\"$

\

$\"\"$

\

Substitute $\"\"$ and $\"\"$ . \ \

\

$\"\"$

\

$\"\"$ .

\

$\"\"$ \ \

\

$\"\"$

\

Again apply derivative on each side with respect to $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

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

\

$\"\"$

\

$\"\"$

\

Substitute $\"\"$ and $\"\"$ .

\

$\"\"$

\

$\"\"$

\

Substitute $\"\"$ . \ \

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

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

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

Substitute $\"\"$ , $\"\"$ and $\"\"$ in $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

Graph: \ \

\

Graph the functions $\"\"$ and $\"\"$ . \ \

\

$\"\"$ .

\

Observe the graph: \ \

\

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

\

$\"\"$ \ \

\

The values are $\"\"$ , $\"\"$ and $\"\"$ .

\

The function is $\"\"$ .

\

Graph: \ \

\

Graph the functions $\"\"$ and $\"\"$ . \ \

\

$\"\"$ .

\

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