| − | '''Laplace's equation''' is an equation such that the sum of all of the non-mixed second order partial derivatives of a [[function]] equaling zero. All functions that have a [[Laplacian]] of zero, are called [[harmonic functions]]. | + | '''Laplace's equation''' is an [[equation]] such that the sum of all of the non-mixed second order [[partial derivative]]s of a [[function]] equaling zero. All functions that have a [[Laplacian]] of zero, are called [[harmonic function]]s. |