Question: Let r, , be spherical coordinates. If u(r, , ) satisfies 2 u = 0, show that v(r, , ) = u(1/r, ,

Let r, θ, Φ be spherical coordinates. If u(r, θ, Φ) satisfies ∇2u = 0, show that v(r, θ, Φ) = u(1/r, θ, Φ)/r satisfies ∇2v = 0.

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