1 Take $x=\sqrt{2}$ as an example.
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| created: 2020-07-05 15:20:23 | modified: 2020-07-05 15:20:40 | by: bookofproofs | references: [8311]
[8311] Modler, F.; Kreh, M.: “Tutorium Analysis 1 und Lineare Algebra 1”, Springer Spektrum, 2018, 4. Auflage