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5.1 INTEGRALES DOBLES 5.2 INTEGRALES TRIPLES

5.1 INTEGRALES DOBLES 5.2 INTEGRALES TRIPLES

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MOISES VILLENA Integración Múltiple<br />

Evaluando:<br />

⎛ x ⎞<br />

b⎜1−⎟<br />

a ⎝ a ⎠<br />

∫∫ 0 0<br />

⎛ x y⎞<br />

V = c⎜1− − ⎟dydx<br />

⎝ a b⎠<br />

⎛ x ⎞<br />

b⎜1−⎟<br />

a ⎝ a ⎠<br />

a<br />

∫∫ ∫<br />

x<br />

⎛ x ⎞<br />

⎡ ⎛ ⎞<br />

b⎜1−⎟<br />

2<br />

b⎜1−⎟⎤<br />

x y x a y a<br />

⎛ ⎞ ⎛ ⎞ ⎝ ⎠ ⎝ ⎠<br />

V = c 1 dydx c<br />

⎢<br />

1 y<br />

⎥<br />

⎜ − − ⎟ = ⎜ − ⎟ − dx<br />

⎝ a b⎠ ⎢⎝ a⎠ 2b<br />

⎥<br />

0 0<br />

⎢⎣ ⎥⎦<br />

0 0 0<br />

a<br />

⎡<br />

∫0<br />

2 2<br />

2<br />

⎤<br />

a<br />

2<br />

b⎛ x⎞<br />

= c ⎜1− ⎟ dx ∫ 2 ⎝ a ⎠<br />

0<br />

3<br />

a<br />

⎛ x⎞ b ⎛ x⎞<br />

= c ⎢b⎜1− ⎟ − ⎜1− ⎟ ⎥dx<br />

⎢⎣ ⎝ a⎠ 2b⎝<br />

a⎠<br />

⎥⎦<br />

⎛ x ⎞<br />

1<br />

bc<br />

⎜ − ⎟<br />

a<br />

=<br />

⎝ ⎠<br />

2 ⎛ 1 ⎞<br />

3⎜−⎟<br />

⎝ a ⎠<br />

0<br />

3<br />

a<br />

⎡ ⎤<br />

abc ⎛ x ⎞<br />

= ⎢−⎜1− ⎟ ⎥<br />

6 ⎢⎣ ⎝ a ⎠ ⎥⎦<br />

abc<br />

= [ 1−0] 6<br />

abc<br />

V =<br />

6<br />

Ahora consideremos un sólido limitado por superficies. Por ejemplo:<br />

x<br />

z<br />

z = f ( x, y)<br />

0<br />

z = g( x, y)<br />

R<br />

y<br />

169

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