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Problems in Mathematical Analysis.pdf - pwp.net.ipl.pt

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258 Mult<strong>ipl</strong>e and L<strong>in</strong>e Integrals (Ch. 7<br />

Sec. 4. Ccmput<strong>in</strong>g Volumes<br />

The volume V of a cyltndroid bounded above by a cont<strong>in</strong>uous surface<br />

* = /(*, y), be low by the ph-ne 2 0, and on the sides by a right cyl<strong>in</strong>drical<br />

surface, which cuts out of the ju/-plane a region S (Fig. 94), is equal to<br />

2188. Use a double <strong>in</strong>tegral to express the volume of a pyramid<br />

wiih vertices 0(0, 0)", A(\, 0, 0), fl(l, 1,0) and C(0, 0, 1)<br />

(Fig. 95). Set up the limits ol <strong>in</strong>tegration.<br />

Fig. 94 Fig. 95<br />

C(0,0,1)<br />

In <strong>Problems</strong> 2189 to 2192 sketch the solid whose volume is<br />

expressed by the given double <strong>in</strong>tegral:<br />

2189. f dx f<br />

(1 x y)dy. 2191.<br />

x)dy.<br />

J J<br />

Z-X<br />

2190. 2192.<br />

2193. Sketch the solid whose volume is expressed by the <strong>in</strong>a<br />

V a* - _<br />

x*<br />

tegral f dx ( YC? tfy* dy\ reason geometrically to f<strong>in</strong>d the<br />

value of this <strong>in</strong>tegral.<br />

2184. F<strong>in</strong>d the volume of a solid bounded by the elli<strong>pt</strong>ical<br />

paraboloid z 2 = 2x* -f f/ + 1, the plane x + y=\, and the coord<strong>in</strong>ate<br />

planes.<br />

215. A solid is bounded by a hyperbolic paraboloid z x* tf<br />

and the planes = (/ 0, e = 0, x=l. Compute its volume.

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