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# Exam2_3 8 - Version 208 Exam 2 Radin(58305 B 3 4 2 1 3 1 4...

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Version 208 – Exam 2 – Radin – (58305) 8 is concave up. 1. parenleftBig −∞ , 3 4 parenrightBig , parenleftBig 1 , parenrightBig 2. parenleftBig 1 , 3 4 parenrightBig 3. parenleftBig −∞ , 1 parenrightBig , parenleftBig 3 4 , parenrightBig 4. parenleftBig 3 4 , 1 parenrightBig 5. parenleftBig −∞ , 3 4 parenrightBig , parenleftBig 1 , parenrightBig correct Explanation: The function f will be concave up when f ′′ ( x ) > 0, i.e. , on the solution set of the inequality f ′′ ( x ) = 8 x 2 2 x 6 = 2(4 x + 3)( x 1) > 0 . Thus f will be concave up on parenleftBig −∞ , 3 4 parenrightBig , parenleftBig 1 , parenrightBig . 017 10.0 points If f is a continuous function on ( 5 , 3) whose graph is 2 2 4 2 4 which of the following properties are satisfied? A. f ( x ) < 0 on (1 , 3), B. f has exactly 1 local maximum, C. f has exactly 3 inflection points.
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