Computational Thinking, Python, Linear Algebra, Linear Regression, Jupyter Notebook.
Factorization exists for ALL matrices Just like with SVD, there are full and reduced versions of the QR factorization. Matrix Inversion is Unstable from scipy.linalg import hilbert n = 14 A = hilbert(n) x = np.random.uniform(-10,10,n) b = A @ x A_inv = np.linalg.inv(A) np.linalg.norm(np.eye(n) - A