Basic Mathematics by Serge Lang - 17.6 Cramer's Rule (Basic Mathematics)

We have already done Cramer's Rule informally, but here let's talk about it specifically. Although using the elimination method is usually faster, even for three equations with three unknowns, Cramer's Rule is a good technique for more equations with more unknowns. 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!