DIFFERENTIAL Equation

DIFFERENTIAL Equation, is an equation involving or containing differential quantities; as the equation

Differential $3x^2\; dx\; =\; 2ax\; dx\; +\; ay\; dx\; +\; ax\; dy\; =\; 0$. Some mathematicians, as Stirling, &c. have also applied the term differential equation in another sense, to certain equations defining the nature of series.