Science:Math Exam Resources/Courses/MATH100/December 2018/Question 05 (d)
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Question 05 (d) 

Let (d) Find the and coordinates of all the points of inflection. 
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 

Where does change concavity? Refer to previous part of the question. 
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Solution 

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Please rate my easiness! It's quick and helps everyone guide their studies. We know from part (c) that changes sign at , and we have . Therefore, the only inflection point is at . 