Science:Math Exam Resources/Courses/MATH100/December 2015/Question 01 (iii)
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Question 01 (iii) 

Compute 
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? 
If you are stuck, check the hints below. Read the first one and consider it for a while. Does it give you a new idea on how to approach the problem? If so, try it! If after a while you are still stuck, go for the next hint. 
Hint 1 

Do the direct substitution. What would you get in numerator and denominator? 
Hint 2 

What are the signs of and , when ? 
Checking a solution serves two purposes: helping you if, after having used all the hints, you still are stuck on the problem; or if you have solved the problem and would like to check your work.

Solution 

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Please rate my easiness! It's quick and helps everyone guide their studies. Using direct substitution, we get Therefore, the limit would be either or , depending on the sign of the function when . For , the numerator and the denominator are positive. Therefore, the answer is . 