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How to show that $e^{x} \geq \left (1 + \frac{x}{n} \right) ^{n}$ holds for each non-negative real $x$ and each integer $n \geq 1$ ? I tried series and induction but got stuck. Can you please help?

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    Hint : use, $\exp(y) \geq 1 + y$ for all $y$.2010-11-04

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