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Separable partial differential equation
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Everything about Separable Partial Differential Equation totally explained

A separable partial differential equation (PDE) is one that can be broken into a set of separate equations of lower dimensionality (fewer independent variables) by a method of separation of variables. This generally relies upon the problem having some special form or symmetry. In this way, the PDE can be solved by solving a set of simpler PDEs, or even ordinary differential equations (ODEs) if the problem can be broken down into one-dimensional equations. (This shouldn't be confused with the case of a separable ODE, which refers to a somewhat different class of problems that can be broken into a pair of integrals; see separation of variables.)

Example

For example, consider the time-independent Schrödinger equation » [- abla^2+ V(mathbf) = psi_1(x_1) cdot psi_2(x_2) cdot psi_3(x_3). (More generally, the separable cases of the Schrödinger equation were enumerated by Eisenhart in 1948.)

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