Use L'H
pital's rule to find the limit.
A. 1
B. 
C. 
D. 0
Answer: B
Mathematics
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Find the magnitude of u × v and the unit vector parallel to u × v in the direction of u × v.u = - 
i + 
j + k, v = i + j + 2k
A. 2
; - 
i + 
j - 
k
B. 8; 
i - 
j - 
k
C. 8; 
i - 
j + 
k
D. 2
; 
i + 
j - 
k
Mathematics
Find the first four nonzero terms in the Maclaurin series for the function.x sin(4x)
A. 4x2 + 
x4 + 
x6 + 
x8 + . . .
B. 4x - 8x3 + 
x5 - 
x7 + . . .
C. 4x2 - 
x4 + 
x6 - 
x8 + . . .
D. 4x - 
x4 + 
x6 - 
x8 + . . .
Mathematics
Use differentiation to determine whether the integral formula is correct.
dx = 
+ C
A. No B. Yes
Mathematics
Solve the problem.For a circle of radius 4 feet, find the arc length s subtended by a central angle of 30°. Round to the nearest hundredth.
A. 6.28 ft B. 376.99 ft C. 2.09 ft D. 4.19 ft
Mathematics