Quiz 8 with Solution - Calculus | MATH 220, Quizzes of Calculus

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Math 220 Quiz 8 (take-home) Spring 2011 Name _SalytigySs £ ae You may work with other students in this class. However cach student should write up solutions separately and independently — nobody should copy someone else’s work. You may use your notes or the textbook. No calculators or computers are allowed on any problem. You must show sufficient work to justify cach answer. The quiz should be turned in to your TA at the beginning of your discussion secti on Wednesday, March 9 (Merit sections) or Thursday, March 10 (other se Be sure that the pages are nicely stapled - do not just fold the corners. Note to TA’s — you should not help students with these specific problems or go over solutions until after 4pm Thursday. . (3 points) A function f(z) has the following first derivative. J'(x) = 3c (2” -9)" (x +25)" (2a — 20)8 923.0 (3) (x 1M (x 2 (2D valies - 4'CD pn ee Pee T ae" a Ip (a) Find cach critical number of the function f(z). ake vi 3, 72,10 (b) Find the 2-value for each local maximum value of f(). — (c) Find the z-value for each local minimum value of f(x) e