$\"\"$

The limit function is $\"\"$ .

Evaluate the limit function by path limits.

Find the limits along the path $\"\"$ .

$\"\"$

$\"\"$ .

$\"\"$

Find the limits along the path $\"\"$ .

$\"\"$

$\"\"$ .

Since the two limits are not equal, limit does not exist.

$\"\"$

$\"\"$ does not exist.