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Unformatted text preview: and j r ( t ) j = 2 and we have Z C ( x + y ) ds = Z &= 2 (2 cos ( t ) + 2 sin ( t )) (2) dt = 8 . 3) Let V ( x; y ) be the velocity eld V ( x; y ) = x i + y j . 1 Find the &ow along and the &ux across the curve r ( t ) = cos ( t ) i + sin ( t ) j & t & & . Solution: Here we have M ( x; y ) = x , N ( x; y ) = y , dx=dt = sin ( t ) and dy=dt = cos ( t ) . The &ow is thus Z & ((cos ( t )) ( sin ( t )) + (sin ( t )) (cos ( t ))) dt = 0 and the &ux is Z & ((cos ( t )) (cos ( t )) (sin ( t )) ( sin ( t ))) dt = & . 2...
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This note was uploaded on 02/05/2012 for the course MATH 2203 taught by Professor Ellermeyer during the Fall '10 term at FIU.
 Fall '10
 Ellermeyer
 Math

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