Express the integrand as a sum of partial fractions and evaluate the integral.
A. -8 ln 
+ 5ln
+ C
B. -3 ln 
+ 5ln
- 3ln
+ C
C. -8 ln 
+ 5ln
+ 3ln
+ C
D. - 
+ 5ln
+ 3ln
+ C
Answer: C
Mathematics
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, 1 ? x ? 2, with density ?(x) = 
A. 
= 
, 
= 3
B. 
= 
, 
= 
C. 
= 
, 
= 
D. 
= 
, 
= 
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Find the length of the curve.The line segment r = 8 sec ?, 0 ? ? ? 
A. 8
B. 8 ln
C. 
D. 4(
+ ln(
+ 1))
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