Find the potential function f for the field F.F = - 
i + 
j - 
k
A. f(x, y, z) = 
- 
+ 
+ C
B. f(x, y, z) = 
+ C
C. f(x, y, z)= ln 
+ C
D. f(x, y, z) = ln (y - x - z) + C
Answer: C
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Use reduction formulas to evaluate the integral.
A. - 
sin 4x cos2 4x + 
+ 
sin 8x + C
B. - 
sin 4x cos3 4x + 
+ 
sin 8x + C
C. - 
sin 4x cos3 4x + 
+ 
cos 8x + C
D. - 
sin 4x cos3 4x + 
+ 
sin 8x + C
Solve the problem.A long-distance runner runs 2 miles south and then 4 miles east. How far is the runner from the starting point? Round to nearest tenth. 
A. 1.1 mi B. 1.5 mi C. 4.5 mi D. 2.5 mi
For an election with 4 candidates (A, B, C, and D) we have the following preference schedule:
Using the method of pairwise comparisons, the winner of the election is
A. A. B. B. C. C. D. D. E. none of these
Solve the problem. Round to the nearest cent or tenth of a percent.A 66.1% markup based on cost is equivalent to what percent based on selling price (retail)?
A. 78.8% B. 21.2% C. 60.2% D. 39.8%