Calculate the circulation of the field F around the closed curve C.F = (-x - y)i + (x + y)j , curve C is the counterclockwise path around the circle with radius 2 centered at 
A. 8?
B. 16?
C. 8(1 + ?)
D. 8(1 + ?) + 112
Answer: A
Mathematics
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Solve the given differential equation.y"' - 48y' - 128y = 0
A. y = C1e8x + (C2 + C3x)e-4x B. y = C1e-4x + (C2 cos 8x + C3 sin 8x) C. y = C1e8x + C2e-8x + C3e-4x D. y = C1e-4x + (C2 + C3x)e8x
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The doctor orders a dosage of 250 mg of medication to be given to a patient 3 times a day. Calculate the total amount of medication to be given in one day.
A. 250 mg B. 750 mg C. 83.3 mg D. 2000 mg
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Evaluate using a scientific calculator. Express answer rounded to three decimal places.e-2.8
A. 0.061 B. 0.361 C. -7.611 D. -0.061
Mathematics
Find the exact value of the expression.cos 
cos 
+ sin 
sin 
A. 1
B. 
C. 
D. 
Mathematics