Calculate the circulation of the field F around the closed curve C.F = xyi + 8j , curve C is r(t) = 2 cos ti + 2 sin tj, 0 ? t ? 2?
A. 0
B. 
C. 16
D. 
Answer: A
Mathematics
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Draw the given angle.270°
A. 
B. 
C. 
D. 
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Classify the statement as either true or false.If f and g are inverses of each other, then (f ? g)(x) = -x.
A. False B. True
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Find the unknowns on the right side of the partial fraction decomposition.
= 
+ 
A. A = 1, B = -4 B. A = -1, B = 4 C. A = -1, B = -4 D. A = 1, B = 4
Mathematics
Solve the problem.At a lumber company that sold shelves, a customer could choose from 3 types of wood, 5 different widths and 5 different lengths. How many different types of shelves could be ordered?
A. 13 B. 40 C. 75 D. 45
Mathematics