JEq

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$⟨ x ⟩ ⟨ \frac{1}{x} ⟩ \geq 1$

Die jensensche Ungleichung ist z. B. für Erwartungswerte anwendbar. Ist $f$ konvex und $X$ eine integrierbare Zufallsvariable, dann gilt

f (E (X)) \leq E (f (X)) .

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