31 Orthogonal projectors and least squares with QR

0:00 Introduction 0:15 Theory: projectors 2:32 Exercise: exam March 2026 T7 4:03 Theory: least squares via QR 5:34 Example: lecture example 7:21 Exercise: exam April 2026 T6 8:49 Theory: why QR 9:17 Recap Narration: synthetic voice by Kyutai Pocket TTS (CC-BY-4.0), cloned from a public-domain LibriVox recording.