## Quick Reference

Equations for one or more unknown functions involving derivatives of those functions. The equations describe changes in a system, usually modeling some physical or other law. Except in simple cases the solution cannot be determined analytically. See ordinary differential equations, partial differential equations.

*Subjects:*
Mathematics.

## Related content in Oxford Index

##### Reference entries

Users without a subscription are not able to see the full content. Please, subscribe or login to access all content.