Simplify the expression.
A. 
B. 
C. 
D. 
E. none of these
Answer: B
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Find at least three nonzero terms [including a0, at least two cosine terms (if they are not all zero) and at least two sine terms (if they are not all zero)] of the Fourier series for the given function.f(x) = -x + ? -? ? x ? ?
A. f(x) = ? - 2 sin x + 
sin 2x - . . .
B. f(x) = ? - sin x + 
sin 2x - . . .
C. f(x) = ? + 2 sin x - 
sin 2x + . . .
D. f(x) = ? - 2 sin x + sin 2x - . . .
Insert <, >, or = between the pair of numbers to make the statement true.-7 -1
A. > B. < C. =
Solve.x2 - xy + 5y2 = 7x - y = 2
A. (3, 1), 
B. (1, -1), 
C. (1, -1), 
D. (3, 1), 
Solve the problem.Of the coffee makers sold in an appliance store, 5% have either a faulty switch or a defective cord, 1.3% have a faulty switch, and 0.3% have both defects. What is the probability that a coffee maker will have a defective cord given that it has either a faulty switch or defective cord? Round to the nearest thousandth.
A. 0.800 B. 0.003 C. 0.260 D. 0.013