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Difference-Differential Equation
A difference-differential equation is a two-variable equation consisting of a coupled ordinary differential equation and recurrence equation.
In older literature, the term "difference-differential equation" is sometimes used to mean delay differential equation.
See also
Ordinary Differential Equation, Recurrence EquationExplore with Wolfram|Alpha
Cite this as:
Weisstein, Eric W. "Difference-Differential Equation." From MathWorld--A Wolfram Resource. https://mathworld.wolfram.com/Difference-DifferentialEquation.html