Question

Reduce the following PDE to a set of three ODEs by the method of separation of
variables.
∂²u/∂r² + (2/r) ∂u/∂r + (1/r²) ∂²u/∂θ² + (cosθ/r²) ∂u/∂θ + (1/r² + sin²θ) ∂²u/∂φ² = 0

Answer 1

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