# Ordinary Differential Equations/Old contents

### old table of contentsEdit

- Form and Solutions of Differential Equations
- First-Order Differential Equations
- Separation of Variables
- Linear Differential Equations
- Exact Differential Equations
- Substitution Methods
- Bernoulli Equations
- Ricatti Equations
- Orthogonal and Oblique Trajectories
- Equations of higher degrees
- Equations without x or y
- Equations that are homogeneous in x and y
- d'Alembert's Equation
- Clairaut Equations
- Legendre Transformations
- Graphing Differential Equations

- Second-Order Differential Equations
- Higher Order Differential Equations
- Linear equations
- Integration methods

- Sturm-Liouville theory
- Systems of linear differential equations
- Nonlinear Systems
- Green's Functions
- Existence and Uniqueness of Solutions
- Continuous Transformation Groups
- Glossary
- List of Some Equations
- Help Needed
- Roadmap