Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Por outro lado,<br />
<br />
A<br />
b <br />
∂F1<br />
dxdy =<br />
∂y a<br />
f2(x)<br />
∂F1<br />
f1(x) ∂y dy<br />
<br />
dx<br />
b <br />
= F1(x, f2(x)) − F1(x, f1(x)) dx.<br />
a<br />
Do mesmo modo, uma vez que a região A também po<strong>de</strong> ser <strong>de</strong>scrita por<br />
temos:<br />
e<br />
Assim,<br />
A = {(x, y) ∈ R 2 : h1(y) < x < h2(y) e c < y < d},<br />
<br />
<br />
Γ<br />
d <br />
(0, F2) · dr = F2(h2(t), t) − F2(h1(t), t) dt<br />
A<br />
∂F2<br />
dxdy =<br />
∂x<br />
<br />
Γ<br />
c<br />
d <br />
F2(h2(y), y) − F2(h1(y), y) dy.<br />
c<br />
<br />
<br />
F · dr = (F1, 0) · dr + (0, F2) · dr<br />
Γ <br />
=<br />
Γ<br />
<br />
∂F2 ∂F1<br />
− dxdy.<br />
∂x ∂y<br />
Seja Γ o quadrado <strong>de</strong> vértices em (0, 0), (2, 0), (2, 2) e (0, 2).<br />
A<br />
•.<br />
**<br />
. .<br />
• . •.<br />
. .<br />
. . . . 4<br />
. .<br />
. •