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92

Step-by-step Answer
PAGE: 502SET: ExercisesPROBLEM: 92
Please look in your text book for this problem Statement

(a)

The function is .

The limit expression is .

Substitute   in .

The limit is  

Evaluation of the limit.

.

Therefore, .

(b)

The function is .

The limit expression is .

Substitute   in .

The limit is  .

Evaluate the limit.

LHospitals Rule :

If the value of limit is indeterminate form of type  or , then

Since  use LHospitals rule.

The product rule of derivaive : .

Since  use LHospitals rule.

Therefore, .

(a) .

(b)  .



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