Chapter 8: Applications of Triple Integration
Section 8.2: Average Value
Essentials
The average value of f over R is defined as ∫∫∫Rf dv∫∫∫R1 dv, where dv is the element of volume for R.
Examples
In each of the following examples, find the average value of the given function over the given region R.
Example 8.2.1
fx,y,z=x y z
R is the region in Example 8.1.1
Example 8.2.2
R is the region in Example 8.1.2
Example 8.2.3
fr,θ,z=z r2sinθ/6
R is the region in Example 8.1.3
Example 8.2.4
fr,θ,z=r z2cosθ/3
R is the region in Example 8.1.5
Example 8.2.5
fx,y,z=5 x2+3 y2+z2
R is the region in Example 8.1.8
Example 8.2.6
fρ,φ,θ=ρ2
R is the region in Example 8.1.14
Example 8.2.7
fr,θ,z=r2+z sinθ/4
R is the region in Example 8.1.15
Example 8.2.8
fr,θ,z=z/r2
R is the region in Example 8.1.18
Example 8.2.9
fr,θ,z=z/r
R is the region in Example 8.1.20
Example 8.2.10
fρ,φ,θ=ρ
R is the region in Example 8.1.21
Example 8.2.11
fr ,θ,z=r z cosθ/3
R is the region in Example 8.1.22
Example 8.2.12
fρ,φ,θ=ρ3/2
R is the region in Example 8.1.26
Example 8.2.13
fx,y,z=2 x2+3 y2+4 z2
R is the region in Example 8.1.27
Example 8.2.14
fr,θ,z=z2r sinθ/3
R is the region in Example 8.1.28
Example 8.2.15
fx,y,z=x y2z3
R is the region in Example 8.1.29
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