Question: A function of two variables that satisfies Laplace's Equation, Is said be harmonic. Show that the functions defined in Problems 1 and 2 are harmonic

A function of two variables that satisfies Laplace's Equation,

0. dy %3D

Is said be harmonic. Show that the functions defined in Problems 1 and 2 are harmonic functions.
1. ((x, y) = x3 y - xy3
2. ((x, y) = ln(4x2 + 4y2)

0. dy %3D

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