Rolle's theorem(redirected from Rolle theorem)
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Related to Rolle theorem: Mean value theorem
Rolle's theorem(rôlz, rōlz)
A theorem stating that if a curve is continuous, has two x-intercepts, and has a tangent at every point between the intercepts, at least one of these tangents is parallel to the x-axis.
[After Michel Rolle (1652-1719), French mathematician.]