MATH 251, Section Quiz 11 (Sections 14.2, 14.3). Thursday, Nov. 11, 2010

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MATH 251, Section
Thursday, Nov. 11, 2010
Quiz 11 (Sections 14.2, 14.3).
Dr. M. Vorobets
NAME (print):
No credit for unsupported answers will be given. Clearly indicate your final answer.
1. [4 pts.] Evaluate the line integral
2. [3 pts.] Find
0 ≤ t ≤ 1.
R
C
R
C
xy 2 ds if C is the right half of the circle x2 + y 2 = 16.
F~ · d~r if F~ = (y + z)~ı − x2~ − 4y 2~k and C is given by ~r(t) = t~ı + t2~ + t4~k,
[more problems on back]
3. [3 pts.] Determine whether or not the vector field
F~ (x, y) = (x2 + y)~ı + (y 2 + x)~
is conservative. If it is, find a function f such that F~ = ∇f .
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