Solve the equation on the interval [0, 2?).2 cos2 x + sin x - 2 = 0
A. 
, 
, 
, 
B. 
, 
C. 
, 
D. 0, ?, 
, 
Answer: D
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Find the integral.
A. 
x2e2x - xe2x + 
e2x + C
B. 
x2e2x - 
xe2x + 
e2x + C
C. 
x2e2x - 
xe2x + 
e2x + C
D. 
x2e2x - 
xe2x + C
Solve the problem.Bob, the incredible shrinking man, loses half of his height each day after he was exposed to a mysterious form of cosmic radiation. How many days before he is literally "knee-high to a grasshopper"? Assume that a grasshopper's knee is 4 millimeters high and that Bob is 2 meters tall. Round your answer to the nearest whole day. (1000 millimeters = 1 meter)
Fill in the blank(s) with the appropriate word(s).
Solve the problem.Wind speed varies in the first twenty meters above the ground. For a particular day, let 
model the wind speed x meters above the ground. At what height is the wind speed 9 meters per second? Round results to the nearest hundredth.
A. 1.79 m B. 0.58 m C. 0.56 m D. 0.49 m
Subtract.(4x2y - 2xy - 3xy2) - (5xy + 3xy2 + 6x2y)
A. -2x2y - 6xy2 - 7xy B. -2x2y + 6xy2 C. -2x2y + 6xy2 - 7xy D. -5x2y - 3xy2 - 7xy