$\"\"$

The limit of the function is $\"\"$ .

Let $\"\"$ .

Construct the table for different values of $\"\"$ , to estimate the value of $\"\"$ :

\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \

Observe the table.

As $\"\"$ tends $\"\"$ from left side, $\"\"$ approaches to $\"\"$ .

$\"\"$ .

As $\"\"$ tends $\"\"$ from right side, $\"\"$ approaches to $\"\"$ .

$\"\"$ .

Left side limit and right side limit are equal, $\"\"$ is exist.

$\"\"$ .

$\"\"$

$\"\"$ .