Express the limit as a definite integral.
?xk, where P is a partition of [-2, 1]
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.How many different sequences of 4 digits are possible if the first digit must be 3, 4, or 5 and if the sequence may not end in 000? Repetition of digits is allowed.
A. 2,000 B. 1,512 C. 2,997 D. 2,999
Find the volume of the solid generated by revolving the region about the given line.The region in the second quadrant bounded above by the curve y = 9 - x2, below by the x-axis, and on the right by the y-axis, about the line x = 1
A. 
?
B. 
?
C. 
?
D. 
?
Indicate whether the statement is true always, sometimes, or never.The product of a pair of complex conjugates is a real number.
A. Always B. Sometimes C. Never
State the domain of the given function.f(x) = 
A. 
B. all real numbers except 
C. (-?, ?)
D. all real numbers except 