Ordinary differential equation - Wikipedia
https://en.wikipedia.org/wiki/Ordinary_differential_equationA linear differential equation is a differential equation that is defined by a linear polynomial in the unknown function and its derivatives, that is an equation of the form where , ..., and are arbitrary differentiable functions that do not need to be linear, and are the successive derivatives of the unknown function y of the variable x. Among ordinary differential equations, linear differential equations play a prominent role for sev…