Evaluate the expression.(-27)1/3
A. -3
B. not a real number
C. -27
D. 3
Answer: A
Mathematics
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Use Euler's method to calculate the first three approximations to the given initial value problem for the specified increment size. Round your results to four decimal places.y' = y - ex - 1, y(1) = 1, dx = 0.5
A. y1 = -0.5591, y2 = -3.6796, y3 = -9.1939 B. y1 = -0.3591, y2 = -3.2796, y3 = -9.1139 C. y1 = -0.1591, y2 = -2.8796, y3 = -9.0339 D. y1 = 0.0409, y2 = -2.4796, y3 = -8.9539
Mathematics
Find numbers a and b, or k, so that f is continuous at every point.
A. a = -5, b = 1 B. a = 6, b = -11 C. a = 6, b = 13 D. Impossible
Mathematics
Sketch the graph of the polynomial function.f(x) = (2x + 1)(x + 1)2
A. 
B. 
C. 
D. 
Mathematics
Find the exact value of the expression.sin 20° cos 40° + cos 20° sin 40°
A. 
B. 
C. 
D. 
Mathematics