Question: Is it true that if we know that x y is harmonic, then it is true to conclude that x and y are .

Is it true that if we know that x y is harmonic,

then it is true to conclude that x and y are .

Is it true that if we know that x y is harmonic, then it is true to conclude that x and y are . harmonic functions? Let p, q, r ER. Let u be harmonic on C. Is it true that the function below is harmonic? v(x, y) = u(px +q, py+r)

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