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Math and science::Analysis::Tao::10: Differentiation of functions

Mean value theorem

Let \( a < b \) be real numbers, and let \( g : [a, b] \to \mathbb{R} \) be a function continuous on \( [a, b] \) differentiable on \( (a, b) \). Then, there exists an \( x \in (a, b) \) such that: \[ g'(x) = \frac{g(b) - g(a)}{b - a} \]


The mean value theorem is a corollary of Rolle's theorem.


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p260