Find the simplest form of a second-order homogeneous linear differential equation that has the given solution.y = c1e9x + c2e4x
A. D2y + 13Dy + 36y = 0
B. D2y - 13Dy + 36y = 0
C. D2y - 13Dy - 36y = 0
D. D2y + 13Dy - 36y = 0
Answer: B
Mathematics
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A. Some germs have made people sick. B. All germs have made people sick. C. At least one germ has made people sick. D. All germs have not made people sick.
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Express the number in scientific notation.74,000
A. 7.4 × 103 B. 7.4 × 10-3 C. 7.4 × 104 D. 7.4 × 10-4
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For the points P and Q, find the coordinates of the midpoint of the segment PQ.P(7
, - 
), Q(-
, 0)
A. 
B. 
C. 
D. (-3, 13)
Mathematics
Use a graph to solve the inequality.(x2 + 3x)1/4 > 41/4
A. (-?, -4) ? (1, ?) B. (-1, 4) C. (-?, -1) ? (4, ?) D. (-4, 1)
Mathematics