Rolle’s theorem states that if a function is continuous and differentiable on an interval, and has the same value at the endpoints, then there is a point where the derivative is zero. Learn the formula, proof, and how to apply it with graphs and examples. Explain the meaning of Rolle’s theorem. Describe the significance of the Mean Value Theorem. State three important consequences of the Mean Value Theorem. The Mean Value Theorem is one of the most important theorems in calculus. We look at some of its implications at the end of this section. Rolle's theorem is one of the foundational theorems in differential calculus. It is a special case of, and in fact is equivalent to, the mean value theorem, which in turn is an essential ingredient in the proof of the fundamental theorem of calculus. Rolle’s theorem, in analysis, special case of the mean-value theorem of differential calculus. Rolle’s theorem states that if a function f is continuous on the closed interval [a, b] and differentiable on the open interval (a, b) such that f(a) = f(b), then f′(x) = 0 for some x with a ≤ x ≤ b.
