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Evaluate CFdr\int _ { C } \mathbf { F } d \mathbf { r }

Question 10

Multiple Choice

Evaluate CFdr\int _ { C } \mathbf { F } d \mathbf { r } where F(x,y) =(arctany,xy21+y2) \mathrm { F } ( x , y ) = \left( \arctan y , - \frac { x y ^ { 2 } } { 1 + y ^ { 2 } } \right) and the curve C is given by C : x=2cost,y=2sint,0t2πx = 2 \cos t , y = 2 \sin t , 0 \leq t \leq 2 \pi .


A) 2π2 \pi
B) 12π12 \pi

C) 4π4 \pi
D) π\pi
E) 2π- 2 \pi
F) 12π- 12 \pi
G) 4π- 4 \pi
H) 00

Correct Answer:

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