Evaluate where C is the boundary of the semi annular region D in the upper half-plane between

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Evaluate 

$y dx + 3xy dy,

where C is the boundary of the semi annular region D in the upper half-plane between the circles x2 + y2 = 1 and x2 + y2 = 4.

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Calculus

ISBN: 9780495011606

6th Edition

Authors: James Stewart

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