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Web skærmformat. - Aarhus Universitet

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II. Integration – 4. Koordinatskift 240<br />

Dobbelt integralet beregnes ved koordinatskift<br />

π/2<br />

V = f(x,y)dA =<br />

R<br />

−π/2<br />

2 cos θ<br />

0<br />

r 2 rdr dθ<br />

4.26. Polær Type II, eksempel ☞ [S] 12.4 Double integrals in polar . . .<br />

Eksempel 3 - fortsat<br />

π/2 2 cos θ<br />

V = r 2 rdr dθ<br />

−π/2<br />

π/2 4 r<br />

=<br />

−π/2 4 r=0<br />

π/2<br />

= 4cos 4 θ dθ<br />

= ...<br />

= 3π<br />

2<br />

−π/2<br />

0<br />

r=2 cos θ<br />

4.27. Kilen ☞ [S] 12.4 Double integrals in polar . . .<br />

Kile<br />

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