Find the indicated series by the given operation.Show that by integrating term by term the expansion of - 
, the result is the expansion for 
A. 
= x2 + 
x4 + 
x6 + 
x8 + . . .
B. 
= -x2 + 
x4 - 
x6 + 
x8 - . . .
C. 
= x2 - 
x4 + 
x6 - 
x8 + . . .
D. 
= -x2 - 
x4 - 
x6 - 
x8 - . . .
Answer: D
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Solve the problem.A boat is sailing directly toward a lighthouse that is 120 ft tall. The angular size ? of the lighthouse is the angle formed by the lines from the top and bottom of the lighthouse to the observer on the boat, as shown in the figure. What is the rate of change of the angular size d?/dx when the boat is 350 feet from the lighthouse?
A. -0.00088 rad/ft B. -0.00877 rad/ft C. -0.00007 rad/ft D. 0.00450 rad/ft
Simplify the complex fraction.
A. 
B. 
C. 
D. 
To find the number of units that gives break-even for the product, solve the equation R = C. Round your answer to the nearest whole unit.A manufacturer has total revenue given by the function R = 258x and has total cost given by
where x is the number of units produced and sold.
A. 284 units B. 232 units C. 3430 units D. 4198 units
Find the indicated set.Let A = {0, 3, 5, 8}, B = {1, 4, 6, 9}, and C = {0, 4, 5, 6}.Find (A ? C) ? B.
A. {0, 1, 4, 5, 6, 9} B. {0, 1, 3, 4, 5, 6, 8, 9} C. {4, 6} D. ?