Integrais duplos e de linha
Integrais duplos e de linha
Integrais duplos e de linha
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24 <strong>Integrais</strong> Duplos<br />
(b) D = {y = x, y =5x, x =1}<br />
(c) D = {y = √ x, y =2 √ x, x =4}<br />
18. Passando aos coor<strong>de</strong>nadas polares calcule os seguintes integrais <strong>duplos</strong><br />
(a)<br />
(b)<br />
(c)<br />
(d)<br />
(e)<br />
(f)<br />
(g)<br />
Z1<br />
−1<br />
Z2<br />
0<br />
Z1<br />
0<br />
Z1<br />
1/2<br />
√<br />
1−y2 Z<br />
p<br />
x2 + y2dxdy 0<br />
√ 4−x 2<br />
Z<br />
0<br />
√ 1−x 2<br />
Z<br />
0<br />
√<br />
1−x2 Z<br />
0<br />
√<br />
1/2 1−x2 Z<br />
0<br />
Z1<br />
−1<br />
Z2<br />
0<br />
Z<br />
0<br />
√ 1−y 2<br />
Z<br />
− √ 1−y 2<br />
√ 4−y 2<br />
Z<br />
− √ 4−y 2<br />
p x 2 + y 2 dydx<br />
e x2 +y 2<br />
dydx<br />
¡ x 2 + y 2 ¢ 3/2 dydx<br />
xy p x 2 + y 2 dydx<br />
e −(x2 +y 2 ) dxdy<br />
x 2 y 2 dxdy<br />
19. Utilizando as coor<strong>de</strong>nadas polares, calcule os seguintes integrais <strong>duplos</strong>:<br />
(a) RR ¡<br />
D 3x +4y2 ¢ dxdy, on<strong>de</strong> D = © x2 + y2 ≥ 1,x2 + y2 ≤ 4,y ≥ 0 ª<br />
(b) RR<br />
D xdxdy, on<strong>de</strong> D = © x2 + y2 ≤ 25 ª<br />
(c) RR<br />
D ydxdy, on<strong>de</strong> D é a região do plano real limitada por x2 + y 2 =9,y=0<br />
e y = x.