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Rolle's Theorem

Definition

Rolle's Theorem states that if a function is continuous on a closed interval [a, b], differentiable on an open interval (a, b), and has equal values for its endpoints, then there exists at least one point c in (a, b) where the derivative equals zero.

Related terms

Continuity: Continuity refers to whether or not there are any breaks or jumps in a function. For Rolle's theorem to apply, it requires continuity on the closed interval [a, b].

Differentiability: A function is differentiable if it has a derivative at every point in its domain. Rolle's theorem requires the function to be differentiable on the open interval (a, b).

Extreme Value Theorem: The Extreme Value Theorem states that if a function is continuous on a closed interval [a, b], then it must have both a maximum and minimum value within that interval.

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AP® and SAT® are trademarks registered by the College Board, which is not affiliated with, and does not endorse this website.