Hint 1: Use the fact that \(\hat{\boldsymbol{y}}=\boldsymbol{X}(\boldsymbol{X}^T\boldsymbol{X})^{-1}\boldsymbol{X}^T \boldsymbol{y}\).
Hint 2: Use the cyclic property of the trace operator.
Hints for problem 7.1
Published Aug. 8, 2025 12:08 PM
- Last modified Aug. 8, 2025 12:08 PM