Basic Mathematics by Serge Lang - 17.4 Determinants of Order 3 (Basic Mathematics)

Calculating the determinant of 3x3 matrices is done by focusing on a row or a column and multiplying each term by the determinant of a 2x2 matrix. We'll cover how to arrange the terms to get the determinant. Note that no matter which row or column you choose, it will always get the same answer, even the same terms, just in a different order. Join me on Discord: https://discord.gg/TGK47Pf Support Real Physics by buying the book through this Amazon affiliate link: https://amzn.to/2I5yIHr Here's my Patreon account if you want to give me money: https://www.patreon.com/realphysics Other ways to support Real Physics: https://youtu.be/44nldGgJCiw Playlist: https://www.youtube.com/playlist?list=PLMcpDl1Pr-viA25VUkHNmcUkWx9usPgyb Thank you!