Solve the problem.An object in simple harmonic motion has a frequency of 
oscillations per second and an amplitude of 3 feet. Write an equation in the form d = a sin ?t for the object's simple harmonic motion.
A. d = 3 sin 5?t
B. d = 3 sin 
C. d = 3 sin 
D. d = 3 sin 
Answer: A
Mathematics
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Find the limit.
x ln y
A. 16 B. ln (2) - 4 C. ln 16 D. No limit
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Calculate the area of the surface S.S is the portion of the sphere x2 + y2 + z2 = 81 between z = - 
and z = 
.
A. 162
?
B. 9
?
C. 162?
D. 81
?
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Calculate the circulation of the field F around the closed curve C.F = y3i + x2j; curve C is the counterclockwise path around the triangle with vertices at 
, and 
A. 0
B. - 
C. 
D. 
Mathematics
Find the limit.
sec 
A. 1
B. - 
C. 0
D. -1
Mathematics