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Note! On the "derivative of the sum/difference of two functions" equation at 20:06, I accidentally omitted the minus from the right side of the equation.

Also apologies for the initial ghastly views. 🥴

Apologies for the 3/4 view. I forgot my tripod!

Please look: We think that modern mathematics is still flawed. It is clear that there are basic defects in function theory, differential equations, geometry, and algebra, and it has been seven years since the discovery. This will be a stain on world history. [56] viXra:2201.0101 submitted on 2022-01-17 17:19:32, On the Simple Identity (1/(x-1)) + (1/(x 2)) = (2x 3)/((x 1)(x 2)) and the Expression that G(z,a) + Log |z a| is Harmonic Around Z=a from the Viewpoint of the Division by Zero Calculus Authors: Saburou Saitoh, Yoshinori Saitoh Category: General Mathematics [55] viXra:2112.0108 submitted on 2021-12-20 15:54:11, An Essential History of Euclidean Geometry Division by Zero Calculus - History and Development, 2021 Scientific Research Publishing, Inc. www.scirp.org/book/detailedinforofabook.aspx?bookid=2808 Please look 1/0=0: As Fundamental of Mathematics, the division by zero was known as the generalized Moore-Penrose solution of the fundamental equation: ax=b. Look the simple evidence of its importance: viXra:2010.0228 submitted on 2020-10-28 21:39:06, Division by Zero Calculus and Euclidean Geometry - Revolution in Euclidean Geometry Look a simple video talk for its essence at some international conference: media.cmd.gunma-u.ac.jp/media/Play/ef7ca967c3fd4dabb188128fd6038cb81d Book was published: INTRODUCTION TO THE DIVISION BY ZERO CALCULUS, SABUROU SAITOH, January, 2021 www.scirp.org/book/DetailedInforOfABook.aspx?bookID=2746 We founded an international journal on division by zero calculus from the United Kingdom (romanpub.com/dbzc.php).

PЯӨMӨƧM ✅

Loving the class, looking forward to seeing you tomorrow.