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Mathematics (09) Practice Test - MTELs
Mathematics (09) Practice Test - MTELs
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Mathematics (09) Practice Test97. Which of the following equations results from solving thedifferential equation dydx + y 3 cos x = 0?A.B.y –22 = cos(x) + cy 22 = –sin(x) + cC. – y –22 = –sin(x) + cD. – y 22 = cos(x) + c98. Which of the following statements holds <strong>for</strong> all 2 by 2 matricesA, B, and C?A. AB = BAB. A(B + C) = AB + ACC. If AB = 0, then A = 0 or B = 0.D. If AB = AC, then B = C.99. A person invests $10,000 at a 5% annual interest rate<strong>com</strong>pounded quarterly. Solving which of the followingequations yields t, the doubling time in years?A. e 0.0125t = 2B. e 0.05t = 2C. (1.0125) 4t = 2D. (1.05) 4t = 261
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