Decide whether the statement is compound.21 + 37 ? 54
A. Not compound
B. Compound
Answer: B
Mathematics
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Use differentiation to determine whether the integral formula is correct.
dx = 
+ C
A. Yes B. No
Mathematics
Find the unit tangent vector T and the principal unit normal vector N. r(t) = 
i + 
j + 4tk
A. T = 
(cos 0.75t)i - 
(sin 0.75t)j ; N = (-sin 0.75t)i - (cos 0.75t)j
B. T = 
(sin 0.75t)i - 
(cos 0.75t)j ; N = (-sin 0.75t)i - (cos 0.75t)j
C. T = 
(cos 0.75t)i - 
(sin 0.75t)j + 
k ; N = (-sin 0.75t)i - (cos 0.75t)j
D. T = 
(cos 0.75t)i - 
(sin 0.75t)j + 
k ; N = (-sin 0.75t)i - (cos 0.75t)j
Mathematics
Solve the proportion for x.
= 
A. x = 16 B. x = 19 C. x = 18 D. x = 17
Mathematics
Find the area of the specified region.Inside one loop of the lemniscate r2 = 8 cos 2?
A. 2 B. 8 C. 16 D. 4
Mathematics