Use integration by parts to establish a reduction formula for the integral.
, n ? 1
A. 
= - cotn-1 x + 
B. 
= 
cotn-1 x - 
C. 
= 
cotn-2 x - 
D. 
= 
cotn-1 x + 
Answer: B
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Write the improper fraction as a mixed or whole number.
A. 6
B. 5
C. 4
D. 5
Solve.The population growth of an animal species is described by 
where t is the number of months since the species was introduced. Find the population of this species in an area 6 months after the species is introduced.
A. 74 B. 240 C. 470 D. 704
Let u represent src="https://sciemce.com/media/4/ppg__tttt0515191515__f1q13g7.jpg" style="vertical-align: -17.0px;" />
, v represent 
, and w represent 
. Solve first for u, v, and w. Then solve the system of equations.
+ 
+ 
= 
- 
+ 
= 
+ 
+ 
= 
A. 
B. (-1, -3, 1)
C. (1, 3, 1)
D. (1, 3, -1)
Solve the nonlinear system of equations for real solutions.
A. (-3, -8), (-8, -3) B. (3, -8), (3, 8) C. (3, 8), (-3, 8), (3, -8), (-3, -8) D. (3, 8), (8, 3), (-3, -8), (-8, -3)