Step 1:

The expression is $\"\"$

Substitute $\"\"$ in the above expression

$\"\"$

Step 2:

$\"\"$ definition:

$\"\"$ means that for every $\"\"$ , there exists a $\"\"$ , such that for every $\"\"$ , the expression $\"\"$ implies $\"\"$ .

Consider $\"\"$

$\"\"$

Cubing on both sides.

$\"\"$

Consider $\"\"$

$\"\"$

Observe the relation between $\"\"$ and $\"\"$ .

Hence, $\"\"$ .

Solution:

$\"\"$ and $\"\"$ .