$\"\"$

\

The function is $\"\"$ .

\

Observe the given graph.

\

(a) Find $\"\"$ .

\

As $\"\"$ tends to $\"\"$ from left hand side, $\"\"$ approaches to $\"\"$ .

\

As $\"\"$ tends to $\"\"$ from right hand side, $\"\"$ approaches to $\"\"$ .

\

The limit from left hand side and right hand side are not equal and undefined.

\

Limit does not exist.

\

$\"\"$ does not exist.

\

(b) Find $\"\"$ .

\

As $\"\"$ tends to $\"\"$ from left hand side, $\"\"$ approaches to $\"\"$ .

\

As $\"\"$ tends to $\"\"$ from right hand side, $\"\"$ approaches to $\"\"$ .

\

Since the limit from left hand side and right hand side are equal, limit exist.

\

$\"\"$ .

\

$\"\"$

\

$\"\"$ .

\

$\"\"$ agree at all points other than $\"\"$ and $\"\"$ .

\

Rewrite the function as $\"\"$ .

\

Cancel the common terms.

\

$\"\"$ . The simpler form of function is $\"\"$ .

\

$\"\"$ and $\"\"$ agree at all points other than $\"\"$ and $\"\"$ .

\

$\"\"$

\

(a) $\"\"$ does not exist.

\

(b) $\"\"$ .

\

$\"\"$ and $\"\"$ agree at all points other than $\"\"$ and $\"\"$ .