Ordinary differential equation - Wikipedia
https://en.wikipedia.org/wiki/Ordinary_differential_equationSome differential equations have solutions that can be written in an exact and closed form. Several important classes are given here. In the table below, P(x), Q(x), P(y), Q(y), and M(x,y), N(x,y) are any integrable functions of x, y, and b and c are real given constants, and C1, C2,... are arbitrary constants (complexin general). The differential equations are in their equivalent and alternative forms that lead to the solution throu…