**QR Decomposition**


### [Square Matrix](https://texonom.com/square-matrix-21e528744f2e4d81910de180aa0157ce) A and Q is [Orthogonal Matrix](https://texonom.com/orthogonal-matrix-5e743532b7ac4364b6c1737e2da53798) 
R is [Upper Triangular Matrix](https://texonom.com/upper-triangular-matrix-9306a963fe274b20b34438719d709f2f) 
$$A = QR$$

1. [Gram-Schmidt Process](https://texonom.com/gram-schmidt-process-60e50ee9d9f042b986cafaf3e0e960b3) ‘s output is Q
2. $Q^TA = R$








