# Second-Order Differential Equations

Second-order differential equations are differential equations that involve the second derivative of a function. These types of equations are commonly encountered in various fields of mathematics, physics, and engineering to model a wide range of phenomena, such as oscillatory systems, heat transfer, and fluid dynamics.

A general form of a second-order differential equation is given by:

ay”(x) + by'(x) + cy(x) = f(x)

where a, b, and c are constants, y(x) is the dependent variable, x is the independent variable, y'(x) represents the first derivative of y with respect to x, and y”(x) represents the second derivative of y with respect to x.

There are several methods for solving second-order differential equations, depending on the nature of the equation and its coefficients. Some common techniques include the method of undetermined coefficients, variation of parameters, and using Laplace transforms. For linear second-order differential equations with constant coefficients, solutions can be found by assuming a specific form for the solution and substituting it into the equation.