$\"\"$

\

The $\"\"$ term of the sequence $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

Apply L $\"\"$ Hospital $\"\"$ s rule.

\

L $\"\"$ Hospital $\"\"$ s rule : $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$ .

\

Therefore, the sequence is converges to $\"\"$ .

\

$\"\"$

\

The sequence is convergence to $\"\"$ .