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Unformatted text preview: D or on C .) But x x x 2 + y 2 + y y x 2 + y 2 = 1 x 2 + y 22 x 2 ( x 2 + y 2 ) 2 + 1 x 2 + y 22 y 2 ( x 2 + y 2 ) 2 = 2 x 2 + y 22 x 2 + 2 y 2 ( x 2 + y 2 ) 2 = 0 . Therefore, Z C F dr = ZZ D dA = 0 as claimed....
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 Spring '08
 DORAIS
 Math, Calculus

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