$\"\"$

\

The limit expression is $\"\"$ .

\

The maclaurin series of $\"\"$ is $\"\"$ , $\"\"$ .

\

Consider $\"\"$

\

$\"\"$

\

Add $\"\"$ to each side.

\

$\"\"$

\

$\"\"$

\

Divide each side by $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

$\"\"$ .