$\"\"$ \ \

\

Let t = 1 / x

\

As x -->∞ , t --> 0 .

\

$\"\"$ \ \

\

$\"\"$ \ \

\

\

Apply logarithm and anti logarithm .

\

$\"image\"$

\

$\"image\"$

\

$\"image\"$

\

$\"image\"$

\

It is in intermediate form so apply L-Hospital\\'s rule .

\

$\"image\"$

\

$\"image\"$ .