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Web skærmformat. - Aarhus Universitet

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IX. Opgaver – 4. August 2004 583<br />

2) Beregn dobbeltintegralet <br />

Løsning. 1) Området tegnes<br />

D er i polære koordinater<br />

y<br />

1<br />

D<br />

1<br />

x 2 + y 2 + 2 dA.<br />

(1,2) (2,2)<br />

(1,1)<br />

0 1<br />

y = x<br />

Kvartcirklen D = {(x,y)|0 ≤ x,0 ≤ y,x 2 + y 2 ≤ 4}<br />

x = r cos θ, y = r sin θ<br />

x

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