# Rolle's theorem

[rohlz]

- the theorem that a differentiable function having equal values at the endpoints of an interval has a derivative equal to zero at some point in the interval.

## Origin of Rolle's theorem^{}

1890–95; named after Michel Rolle (died 1719), French mathematician

Dictionary.com Unabridged
Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018