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Evaluate cFdr\int _ { c } \mathbf { F } d \mathbf { r }

Question 12

Multiple Choice

Evaluate cFdr\int _ { c } \mathbf { F } d \mathbf { r } where F(x,y) =(yx2+y2,xx2+y2) \mathbf { F } ( x , y ) = \left( \frac { - y } { x ^ { 2 } + y ^ { 2 } } , \frac { x } { x ^ { 2 } + y ^ { 2 } } \right) and the curve CC is given by C:x=5sint,y=5cost,0t4πC : x = 5 \sin t , y = 5 \cos t , 0 \leq t \leq 4 \pi .


A) 10π10 \pi
B) 2π- 2 \pi
C) 4π- 4 \pi
D) π\pi
E) 10π- 10 \pi
F) 2π2 \pi
G) 4π4 \pi
H) 00

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