单词	Rolle's theorem
释义	Rolle's theorem noun ˈrȯlz-  ˈrōlz- : 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 Word History Etymology Michel Rolle †1719 French mathematician First Known Use 1858, in the meaning defined above
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