Solve the equation using an integrating factor.y' + 2y = 15, t > 0
A. y = + Ce2t
B. y = 15 + Ce2t
C. y = + Ce-2t
D. y = + e2t + Ce-2t
Answer: C
Mathematics
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Solve the problem.Given log b 4 = 1.0596 and log b 7 = 1.4873.Find log b 4b .
A. 1.0596 B. 2.0596 C. 1.1514 + b D. 2.5469
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Solve the problem.Suppose that the temperature T, in degrees Fahrenheit, of a person during an illness is given by the function T(t) = + 98.6, where t is the time, in hours. Find the interval on which the temperature is over 100°. Round to the nearest thousandth when necessary.
A. (0, 1) B. (0.248, 4.038) C. (0.456, 7.43) D. (-?, ?)
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Find the least common denominator (LCD).,
A. (y - 4z)(4z + y) B. (y - 4z)2 C. (y - 4z)(4z - y) D. y - 4z or 4z - y
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Divide and simplify to the form a + bi.
A. - -
i
B. - +
i
C. +
i
D. -
i
Mathematics