If anyone is curious I've uploaded the half-page derivation found in Chapter 3 of Linear Algebra Done Right here[0]. [0] https://imgur.com/a/BTKMWU2 https://im

If anyone is curious I've uploaded the half-page derivation found in Chapter 3 of Linear Algebra Done Right here[0]. [0] https://imgur.com/a/BTKMWU2 https://imgur.com/a/BTKMWU2