The expression is .

As  tends to  from the left hand side, the function  approaches to .

.

The function decreases without bound as  approaches  from left.

As  tends to  from the right hand side, the function  approaches to .

.

The function increases without bound as  approaches  from right.

Since left hand limit is not equal to right hand limit, the limit does not exist.

Limit does not exist.

The function decreases without bound as  approaches  from left.

The function increases without bound as  approaches  from right.