Basic Mathematics by Serge Lang - 2.1 Equations in two unknowns (Basic Mathematics)

Let's find out how to solve two simultaneous equations with two unknowns. Rather than beat on this subject until you grow to hate and fear it (a common approach), Serge Lang simply demonstrates how it works in practice, and gives a few caveats. This is a powerful technique that should greatly expand your problem-solving ability. 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!