$\"\"$

The equation is $\"\"$ .

Function : For any value of $\"\"$ , there will be unique value of $\"\"$ .

Determine whether the equation $\"\"$ defines a function or not.

The equation $\"\"$ tells us to take an input $\"\"$ .

For any value of $\"\"$ , we get only one value for $\"\"$ .

$\"\"$

Consider $\"\"$ .

Substitute $\"\"$ in $\"\"$ .

$\"\"$

Consider $\"\"$ .

Substitute $\"\"$ in $\"\"$ .

$\"\"$

For two different values of $\"\"$ , we get two different values for $\"\"$ .

Hence, the equation $\"\"$ defines as a function of $\"\"$ .

$\"\"$

The equation $\"\"$ defines as a function of $\"\"$ .