Find the derivative.y = 
A. sec2 x 
B. sec x tan3/2 x
C. 
D. 
tan3/2 x
Answer: A
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Find the torsion of the space curve.r(t) = 
i + 3tj + 
k
A. ? = - 
B. ? = 
C. ? = 
D. ? = 
Calculate the area of the surface S.S is the portion of the sphere x2 + y2 + z2 = 64 between z = - 4
and z = 4
.
A. 128
?
B. 128?
C. 64
?
D. 8
?
Round as indicated.96 to the nearest ten
A. 100 B. 80 C. 90 D. 110
Solve the problem.Tech Support Associates purchased a new computer network server and replaced all its terminals for $29,600. Its estimated life is 4 years, at which time it will have a scrap value of $2,100. Use the straight-line method of depreciation to find the annual amount of depreciation. Find the book value at the end of 3 years.
A. $7,400, $22,200 B. $6,875, $8,975 C. $6,875, $20,625 D. $7,400, $7,400