Rolle's theorem

\ˈrȯlz-, ˈrōlz-\

Definition of Rolle's theorem 

: a theorem in mathematics: if a curve is continuous, crosses the x-axis at two points, and has a tangent at every point between the two intercepts, its tangent is parallel to the x-axis at some point between the intercepts

First Known Use of Rolle's theorem

1858, in the meaning defined above

History and Etymology for Rolle's theorem

Michel Rolle †1719 French mathematician

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The first known use of Rolle's theorem was in 1858

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