Science:Math Exam Resources/Courses/MATH104/December 2012/Question 02 (c)/Solution 1
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By part(a) and part(b) of this problem we see that the function changes from increasing to decreasing at , so there is a local maximum there, and the function changes from decreasing to increasing at , so there is a local minimum at x=3. The function changes concavity at , so there is an inflection point at x = 0.
(Notice that are not points in the domain and hence cannot be extrema or inflection points.)