Science:Math Exam Resources/Courses/MATH100/December 2015/Question 05 (d)
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Question 05 (d) |
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Evaluate the limit . (Remember .) |
Make sure you understand the problem fully: What is the question asking you to do? Are there specific conditions or constraints that you should take note of? How will you know if your answer is correct from your work only? Can you rephrase the question in your own words in a way that makes sense to you? |
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Hint |
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Try to use the L'Hospital's rule. |
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Solution |
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Please rate my easiness! It's quick and helps everyone guide their studies. Observe that the numerator and the denominator are differentiable and the derivative of denominator is which doesn't vanishes near (except at . On the other hand, the numerator and the denominator approaches to as approaches to , so that we can apply the L'hospital's rule. Then, we have We need to apply L'hospital's rule once again because still the numerator and the denominator approaches to as approaches to . The numerator and the denominator satisfies all the assumptions for L'hospital's rule, and hence we get
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