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Advertisement: Grab the exclusive deal + a gift ???? on top for NordVPN's birthday ????! Go to https://nordvpn.com/dorfuchs and secure the amazing deal, now completely risk-free with the 30-day money-back guarantee! Special thanks to Silko Pillasch, who supports me on /dorfuchs. Patreon: / dorfuchs T-Shirts: http://www.DorFuchs.de/t-shirts/ Facebook: / dorfuchs Instagram: / dor.fuchs Twitter: / dorfuchs YouTube: / dorfuchs Website: http://www.DorFuchs.de/ Playlist with all math songs: http://bit.ly/MatheSongs Spotify: http://bit.ly/DorFuchsSpotify iTunes: http://bit.ly/DorFuchsiTunes Content: 00:00 Intro 01:21 Definition of numbers and basic arithmetic (body axioms) 07:00 The proof that division by 0 is impossible 10:31 How to solve unsolvable problems 15:19 Division by 0 for limits 18:31 NordVPN Rap 20:05 [0,∞) ∪ {∞} 25:27 ℝ ∪ {+∞, -∞} 27:46 ℝ ∪ {∞} 29:50 0 = 1 30:51 Conclusion This video was produced and published for private, non-commercial use and can be used free of charge for private purposes without consultation or written permission. Please note, however, that the video may not be changed in content or graphics. When using it, please always state the DorFuchs YouTube channel as the source. Licensing is required for commercial use and use for educational purposes that require consent, such as public film screenings, public accessibility via educational servers, learning platforms or educational clouds, etc. Licenses are available from our sales partner http://www.filmsortiment.de. This video is suitable and intended for school teaching purposes and is therefore a protected work in accordance with Sections 60a and 60b of the Copyright Act.