MA 2113 Midterm: MATH M119 MSState math m119 Practice Exam 3 ans
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1. f (x) = 3x2 6x + 5: s (t) = 3t2(3t 2) + 3(t3 + 2) 3x2(4 + 3x6) 18x5(2 x3) (4 + 3x6)2. The function is increasing on the intervals ( , 2) (0, 2) and it is decreasing on ( 2, 0) (2, ). It has local maximums up on ( at ( 2, 16) and at (2, 16) and it has a local minimum at (0, 0). The local maximums in this function are also global maximums. 3) and it is concave down on ( , . 3: there is only one global minimum and it is at (1, 2). There is no global maximum: the maximum pro t is achieved when 300 steaks are sold.
