MATH 151 Midterm: MATH 151 TAMU Y2011 2011c Exam 2a
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Part i: multiple choice (15 questions, 4 points each. 16 (a) (cid:18) 9 (b) (cid:18) 9 (c) (cid:18) 4 (d) (cid:18) 16 (e) (cid:18) 1. 1: a ball is thrown vertically upward with a velocity of 80 feet per second and the height, s, of the ball at time t seconds is given by s(t) = 80t 16t2. What is the velocity of the ball when it is 96 feet above the ground on its way up? (a) 112 ft/sec (b) 48 ft/sec (c) 16 ft/sec (d) 24 ft/sec (e) 64 ft/sec. 1: given the equation 2xy + sin(y) = 2 , nd dy dx when x = 1 and y = 2 (a) (b) (c) (d) 0 (e) . 2: find the equation of the tangent line to the graph of f (x) = x. 1 + 2x at x = 1. (a) y (b) y (c) y (d) y (e) y . 9 x (x 1) (x 1)
