$\"\"$

The function is $\"\"$ .

To estimate value of limit , construct a table with nearest values of $\"\"$ .

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

$\"\"$	\ $\"\"$ \	$\"\"$	$\"\"$	$\"\"$	$\"\"$	$\"\"$
\ $\"\"$ \	$\"\"$	$\"\"$	$\"\"$	$\"\"$	$\"\"$	$\"\"$

The value of $\"\"$ .

$\"\"$

Graph the function $\"\"$ .

$\"\"$

Observe the graph:

As $\"\"$ tends to $\"\"$ , $\"\"$ approaches to $\"\"$ .

Thus, $\"\"$ .

$\"\"$

$\"\"$ .