4 ms·
Professor’s ‘Amazing’ Trick Makes Quadratic Equations Easier
- crmrc114 7y agoDeep link from the article to a page that the professor made to explain this https://www.poshenloh.com/quadraticdetail/ https://www.poshenloh.com/quadraticdetail/
- deleted 7y ago[deleted]
- saghm 7y agoBack in 6th grade, my geometry teacher played the "Quadratic Formula Song" for us, which was apparently written by a math teacher who wanted to help his students remember the formula. 14 years later, I haven't factored a polynomial since maybe six or seven years ago, and I certainly don't remember how to "complete the square", but I've been utterly unable to forget that formula no matter how hard I've tried. The song is an earworm, and I think it will be stuck in my head for the rest of my life. Listen at your own risk: https://www.youtube.com/watch?v=IvXgFLV2gOk https://www.youtube.com/watch?v=IvXgFLV2gOk
- audiometry 7y agoNYT article: "To find u, we want the product of r and s to be equal to c," Why should it be that the product of the y-values of the roots should equal the constant of the quadratic equation?