$\"\"$

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

$\"\"$ definition of limit :

$\"\"$ ,

for every positive number $\"\"$ there exists a positive number $\"\"$ such that,

if $\"\"$ then $\"\"$ .

Compare the function with definition of the limit, if $\"\"$ then $\"\"$ .

$\"\"$

When $\"\"$ .

Consider $\"\"$ .

$\"\"$