Determine whether the relation is also a function.{(-8, 6), (-5, 9), (-1, -7), (3, 3)}
A. yes
B. no
Answer: A
Mathematics
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Find the curvature of the space curve.r(t) = ti + (sinh t)j + (cosh t)k
A. ? = 
B. ? = 
C. ? = cosh2 t
D. ? = sinh2 t
Mathematics
L'Hopital's rule does not help with the given limit. Find the limit some other way.
A. ? B. 1 C. 0 D. -1
Mathematics
Evaluate the double integral over the given region.
R: 0 ? x ? 5, 0 ? y ? 3
A. ln 24
B. ln 6 ln 4
C. 4 ln 6
D. 
ln 6
Mathematics
During testing of a certain brand of air purifier, the amount of smoke remaining t min after the start of the test was 
percent of the original amount. Compute 
. Round your answer to five
decimal places.
?
A. ?
per minute
per minute in the second power
B.
per minute
per minute in the second power
C.
per minute
per minute in the second power
D.
per minute
per minute in the second power
E.
per minute
per minute in the second power
Mathematics