What is a QR code? A guide to the barcode's basics, why you're seeing it everywhere, and how to scan one

(a) Describe an O(n^2) algorithm based on QR factorization by Givens rotations (Exercise 10.4 ) for solving the least squares problem of Algorithm 35.1 (b) Show how the operation count can be improved to O(n), as mentioned on p. 268, if the problem for step n-1 has already been solved. | Numerade