$\"\"$

\

The function is $\"\"$ .

\

From the definition of limit $\"\"$ .

\

$\"\"$

\

The value of limit $\"\"$ .

\

$\"\"$

\

Given $\"\"$ whenever $\"\"$ .

\

$\"\"$

\

$\"\"$

\

Subtract $\"\"$ from each side.

\

$\"\"$

\

Since $\"\"$ then from above $\"\"$

\

$\"\"$

\

The value of limit is $\"\"$ and $\"\"$ .