The simpler quadratic formula | Ep. 1 Lockdown live math

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Another view on the quadratic formula. Full playlist: https://www.youtube.com/playlist?list=PLZHQObOWTQDP5CVelJJ1bNDouqrAhVPev Home page: https://www.3blue1brown.com Brought to you by you: https://3b1b.co/ldm-thanks Beautiful pictorial summary by @ThuyNganVu: https://twitter.com/ThuyNganVu/status/1258217451323416577 Po Shen Loh on quadratics: https://www.youtube.com/watch?v=ZBalWWHYFQc Welch Labs on imaginary numbers: https://www.youtube.com/playlist?list=PLiaHhY2iBX9g6KIvZ_703G3KJXapKkNaF Mistakes (there will always be mistakes): At minute 22, I write "b' / 2" instead of "-b' / 2". Thanks to these viewers for their contributions to translations Hebrew: Omer Tuchfeld ------------------ 0:00 - Introduction 2:56 - "How often am I going to use this?" + ray tracing example 5:38 - Mental math tricks (factoring numbers, differences of squares) 13:36 - Properties of quadratic functions 18:40 - Deriving the variant quadratic formula 23:07 - Practice problems (ft. complex numbers!) 34:10 - Deriving the traditional quadratic formula from the variant 41:07 - Conclusion (key takeaways) 43:21 - Fun with joke poll questions ------------------ Music by Vincent Rubinetti. Download the music on Bandcamp: https://vincerubinetti.bandcamp.com/album/the-music-of-3blue1brown Stream the music on Spotify: https://open.spotify.com/album/1dVyjwS8FBqXhRunaG5W5u If you want to contribute translated subtitles or to help review those that have already been made by others and need approval, you ca

Published 2020-04-17 · Watch on YouTube ↗
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