Evaluate the line integral along the curve C.
ds, C is the curve r(t) = (9 sin 
t)i + (9 cos 
t)j + 12tk, 2 ? t ? 4
A. 
B. 
C. 
D. - 
Answer: A
Mathematics
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Using Green's Theorem, compute the counterclockwise circulation of F around the closed curve C.F = (x2 + y2)i + (x - y)j; C is the rectangle with vertices at (0, 0), (2, 0), (2, 3), and 
A. 24 B. -12 C. 12 D. 0
Mathematics
Let x be a number. Translate the expression into an English phrase.x + 9
A. A number multiplied by 9 B. A number decreased by 9 C. A number divided by 9 D. A number increased by 9
Mathematics
Determine ? in decimal degrees, 0° ? ? ? 90°. Round results to an appropriate number of significant digits.cot ? = 1.237
A. 38.950° B. 34.830° C. 38.95° D. 34.83°
Mathematics
Express the sum using summation notation.7 + 
+ 
+ ... + 
A. 
B. 
C. 
D. 
Mathematics