Science:Math Exam Resources/Courses/MATH101/April 2011/Question 01 (j)
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Question 01 (j) 

For this question, the exam asks to put your answer in the box provided but also to show your work. This question is worth 3 marks. Full marks is given for correct answers placed in the box and at most 1 mark is given for an incorrect answer. You are required to simplify your answers as much as possible. Find the first three nonzero terms of the Maclaurian series (power series in x) for 
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 hint below. Consider it for a while. Does it give you a new idea on how to approach the problem? If so, try it! 
Hint 

The Maclurian series for is given by 
Checking a solution serves two purposes: helping you if, after having used the hint, 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. We could compute all of the derivatives by hand, but this would be a long and arduous process. This is not an efficient use of exam time! As such, we use the known series of to note that It follows then that and so the first three nonzero terms of the Maclurian series are 