3.1.1 Linear ode with constant coefficients \(a_{3}y^{\prime \prime \prime }+a_{2}y^{\prime \prime }+a_{1}y^{\prime }+a_{0}y=f\left ( x\right ) \)

3.1.1.1 Solved by finding roots of characteristic equation
3.1.1.2 Solved by series method
3.1.1.3 Solved using Laplace transform