$\"\"$

\

The function $\"\"$ .

\

Divide numerator and denominator by $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

To find the $\"\"$ values, use definition of limits at infinity.

\

Definition of limits at infinity :

\

If $\"\"$ is positive value, then $\"\"$ and $\"\"$ , such that $\"\"$ .

\

$\"\"$

\

$\"\"$

\

Squaring on each side.

\

$\"\"$

\

Rewrite the above expression.

\

$\"\"$

\

Therefore $\"\"$ then $\"\"$ .

\

$\"\"$

\

(a)

\

Find the value of $\"\"$ for $\"\"$ .

\

$\"\"$

\

$\"\"$

\

$\"\"$

\

(b)

\

Find the value of $\"\"$ for $\"\"$ .

\

$\"\"$

\

$\"\"$

\

(a) $\"\"$

\

(b) $\"\"$