$\"\"$

\

The function is $\"\"$ .

\

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

\

$\"\"$

\

Quotient rule of derivatives : $\"\"$ .

\

$\"\"$

\

Derivative of the exponential function : $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

$\"\"$ .