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Web skærmformat. - Aarhus Universitet

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II. Integration – 2. Itereret integral 187<br />

Det partielle integral<br />

og det itererede integral<br />

3<br />

b<br />

A(y) = f(x,y)dx<br />

a<br />

d d b<br />

A(y)dy = f(x,y)dxdy<br />

c<br />

c<br />

2.9. Beregn integral integral ☞ [S] 12.2 Iterated integrals<br />

Eksempel 1<br />

R = [0,3] × [1,2], f(x,y) = x 2 y<br />

Partial integral<br />

A(x) =<br />

=<br />

2<br />

a<br />

x 2 y dy<br />

1<br />

y=2<br />

2 y2<br />

x<br />

2 y=1<br />

= x 2 22<br />

2 − x2 12<br />

2<br />

= 3<br />

2 x2

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