Perform the indicated operations. Write the answer in the form a + bj.
- 
A. 10.2 + 11.1j
B. 10.2 + 5.5j
C. 10.2 - 5.5j
D. 5 + 5.5j
Answer: B
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Solve the system by the addition method. If there is no solution or an infinite number of solutions, so state. Use set notation to express the solution set.
A. {(-1, -5)} B. {(-2, -5)} C. no solution; ? D. {(-1, -6)}
Solve the given differential equation.
+ y = 14 + 6 cos 3x
A. y = c1 sin x + c2 cos x + 
cos 3x + 14
B. y = c1 sin x + c2 cos x - 
cos 3x
C. y = c1 sin x + c2 cos x - 
sin 3x + 14
D. y = c1 sin x + c2 cos x - 
cos 3x + 14
Find the difference, regrouping when necessary.
A. 2057 B. 65 C. 1957 D. 2065
Find f(x) and g(x) such that h(x) = (f ? g)(x).h(x) = (7x - 4)3
A. f(x) = 7x3, g(x) = x - 4 B. f(x) = 7x - 4, g(x) = x3 C. f(x) = x3, g(x) = 7x - 4 D. f(x) = (7x)3, g(x) = -4