Nichtnegative reelle Zahl/Epsilon/Nulltest/Aufgabe

Es sei

{}x\in \mathbb {R} _{\geq 0}

eine nichtnegative reelle Zahl. Für jedes

{}\epsilon \in \mathbb {R} ,\,\epsilon >0

, gelte

{}x\leq \epsilon

. Zeige

{}x=0

.

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