$\"\"$

The function is $\"\"$ .

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

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

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

The value of $\"\"$ .

$\"\"$

Graph the function $\"\"$ .

$\"\"$

Observe the graph:

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

Therefore, $\"\"$ .

$\"\"$

$\"\"$ .