Mathematician Finds Easier Way to Solve Quadratic Equations

[7alken]

hi, if you want some mild puzzle, lets try to figure out what's happening here ... it took me several hours after trying it on canon f-915sg (just for fun, initially ...), when I absolutely didn't knew what I am doing nor the guy in the video ... but after that hours, I got more about the casio internals, about the quadratic solution, about the al-Khwarizmi, etc ... okay

But still don't know for sure if I will apologize to him or not ))

https://www.youtube.com/watch?v=Mi-49zfnfXs

it all was followed with gpt4o chat and then really several hours of investigation anywhere, what the hell is going on ...
https://chatgpt.com/share/0daa0ff3-8c20-...fae338c984

in school I hated math/history, now I quite love both, and always the programmable calculators, my first was Solatrex (Ireland) Calcul PSR-98e (citizen SR-59 like), when I could only dream about TI/HP from ham magazines of my dad ... now I have here also HP-12C Platinum and SwissMicro DM-15/16 and Prime and fx-CG50 (because they are top in hw), but fx-5800p is nice too; honestly, today, experimenting with repurposing some calculators hw (keyb/case) for something different inside and outside (ips or amoled display)...

(my honest oppinion is that scientific calc and his thick manual is best way to (re)learn math basics; memorizing of any solution is of course nonsene... these days; understanding is crucial)

cheers
7alken

BTW: already really apologized to him, as on casio fx-82ms (2nd) it REALLY works )) ... on canon f-715sg no ... so, its still a puzzle; no more time to investigate more ...