$\"\"$

\

The function is $\"\"$ and $\"\"$ .

\

$\"\"$ .

\

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

\

$\"\"$

\

$\"\"$

\

Case 1 : $\"\"$ .

\

If $\"\"$ then $\"\"$ .

\

As $\"\"$ then $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

Case 2 : $\"\"$ .

\

$\"\"$ .

\

$\"\"$

\

Case 3: $\"\"$ .

\

If $\"\"$ then $\"\"$ .

\

As $\"\"$ then $\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

$\"\"$

\

If $\"\"$ then $\"\"$ .

\

If $\"\"$ then $\"\"$ .

\

If $\"\"$ then $\"\"$ .