Second Order Linear Differential Equations
www.math.utah.edu › online › 1220Second Order Linear Differential Equations 12.1. Homogeneous Equations A differential equation is a relation involvingvariables x y y y . A solution is a function f x such that the substitution y f x y f x y f x gives an identity. The differential equation is said to be linear if it is linear in the variables y y y .