Question: a) Prove that the function u(x, y) is harmonic on the whole of R. = y - 3xy + 2x - 2y + e*

a) Prove that the function u(x, y) is harmonic on the whole

a) Prove that the function u(x, y) is harmonic on the whole of R. = y - 3xy + 2x - 2y + e* sin(y)

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