The function is .

(1)

Find .

Rewrite the function as .

As tends to , the first and second factors are negative and third factor is large positive in above function.

Hence, approaches to positive large number.

.

Step 2:

(2)

Find .

The function is .

As tends to , the first and second factors are positive and third factor is large negative in above function.

Hence, approaches to large negative number.

.

Solution :

(1) .

(2) .