PX275 - B1e - spherical polar coordinates

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x=ρcos⁡ϕ=rsin⁡θcos⁡ϕy=ρsin⁡ϕ=rsin⁡θsin⁡ϕz=rcos⁡θ θ∈[0,π]ϕ∈[0,2π]ρ∈[0,∞)

surface and volume elements

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dS=dϕ⋅rdθ=r2sin⁡θdϕdθ

\1\n\2\n