Find the length of the curve.y = 
x3 + 
from x = 1 to x = 5
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Express the integrand as a sum of partial fractions and evaluate the integral.
A. 
- 4x - 12 ln
+ 
+ C
B. 
- 4x + 12 ln
+ 
+ C
C. 
- 4x + 6 ln
- 
+ C
D. 12 ln
+ 
- 
+ C
Mathematics
Graph the polar equation.r = 5 sin 2?
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.If f(x, y) = (2000ey)/(1 + 
/2) represents the population density of a planar region on Earth, where x and y are measured in miles, find the number of people within the rectangle -9 ? x ? 9 and -4 ? y ? 0.
A. 4000(1 - e-4) ln 5 ? 9416
B. 4000(1 - e-4) ln 
? 6694
C. 2000(1 - e-4) ln 
? 3347
D. 8000(1 - e-4) ln 
? 13,388
Mathematics
Write the imaginary numbers using the letter i.
A. 
i
B. -6i
C. ±6
D. 6i
Mathematics