$\"\"$

\

$\"\"$ (Undefined)

\

So, apply L’Hospital’s rule.

\

Differentiating the above equation

\

$\"\"$

\

$\"\"$

\

$\"\"$ (Undefined)

\

So, apply L’Hospital’s rule.

\

Again differentiating the above equation

\

$\"\"$

\

$\"\"$

\

$\"\"$ (Undefined)

\

So, apply L’Hospital’s rule.

\

Again differentiating the above equation

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$