2. Higher Order Differential Equations

• Free oscillations : mass-spring system
• Forced oscillations : resonance
• Undamped forced oscillations : model analysis
• Damped forced oscillations : model analysis

3. Systems of Differential Equations

• Mixing problem involving two tanks
• Model of an electrical network
• Mass-Spring system with two degrees of freedom

4. Series of Differential Equations

• Legendre's equation and legendre polynomials P_n(x)
• Bessel's equation and bessel functions J_v(x)

5. Laplace Transformations

6. Partial Differential Equations