Suppose Gabriel's Horn is built out of a material with nonuniform density, and assume the function d(x) gives the density of cross-sections perpendicular to the x-axis. For which of the following choices of d(x) does Gabriel's Horn have finite mass?

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
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Chapter1: Functions And Models
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Consider the region R in the first quadrant bounded by the graphs y =
= 1/x,
x = 1, and y = 0. The solid obtained by revolving R about the x-axis is
called Gabriel's Horn; see the picture below.
1+
y =
00
-1+
Suppose Gabriel's Horn is built out of a material with nonuniform density, and
assume the function d(x) gives the density of cross-sections perpendicular to
the x-axis. For which of the following choices of d(x) does Gabriel's Horn have
finite mass?
a) d(x) = x
b) d(x) = Vx
%3D
c) d(x) = sin²(x)
d) d(x) = In(x)
e) d(x) = x²
Transcribed Image Text:Consider the region R in the first quadrant bounded by the graphs y = = 1/x, x = 1, and y = 0. The solid obtained by revolving R about the x-axis is called Gabriel's Horn; see the picture below. 1+ y = 00 -1+ Suppose Gabriel's Horn is built out of a material with nonuniform density, and assume the function d(x) gives the density of cross-sections perpendicular to the x-axis. For which of the following choices of d(x) does Gabriel's Horn have finite mass? a) d(x) = x b) d(x) = Vx %3D c) d(x) = sin²(x) d) d(x) = In(x) e) d(x) = x²
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