Answer the question.Which of the following is not a condition for applying the integral test to the sequence {an}, where an = f(n)?
A. f(x) is continuous for x ? N
B. f(x) is decreasing for x ? N
C. f(x) is everywhere positive
D. All of these are conditions for applying the integral test.
Answer: C
Mathematics
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A. 5
B. -5
C. - 
D. -20
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Find the exact value of the expression.csc(-240°)
A. - 
B. 
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D. 
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