## ::Time derivative

### ::concepts

Vector::mathbf Velocity::physics Force::position ''t''::motion Growth::variable Respect::output

A **time derivative** is a derivative of a function with respect to time, usually interpreted as the rate of change of the value of the function.<ref>Chiang, Alpha C., *Fundamental Methods of Mathematical Economics*, McGraw-Hill, third edition, 1984, ch. 14, 15, 18.</ref> The variable denoting time is usually written as <math>t\,</math>.

**Time derivative sections**

Intro Notation Use in physics Use in economics See also References

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