Average Value of a Function in Spherical Coordinates
Description
In the spherical coordinate system, where the point x,y,z is defined by ρ,φ,θ and related by x=ρ sinφcosθ, y=ρ sinφsinθ, and z=ρ cosφ, find the average value of a function.
(φ = colatitude, measured down from z-axis)
Integrand
ρ
Region: ρ1φ,θ≤ρ≤ρ2φ,θ,φ1θ≤φ≤φ2θ,a≤θ≤b
ρ1φ,θ
0
ρ2φ,θ
1
φ1θ
φ2θ
π6
16⁢π
a
b
2 π
2⁢π
Inert Integral: dρ dφ dθ
StudentMultivariateCalculusFunctionAverage,ρ=..,φ=..,θ=..,coordinates=sphericalρ,φ,θ,output=integral
∫02⁢π∫016⁢π∫01ρ3⁢sin⁡φⅆρⅆφⅆθ∫02⁢π∫016⁢π∫01ρ2⁢sin⁡φⅆρⅆφⅆθ
Value
StudentMultivariateCalculusFunctionAverage,ρ=..,φ=..,θ=.., coordinates=sphericalρ,φ,θ
12⁢π−14⁢3⁢π23⁢π−13⁢3⁢π
Commands Used
Student[MultivariateCalculus][FunctionAverage]
See Also
Student[MultivariateCalculus], Student[MultivariateCalculus][MultiInt]
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