題組內容

7. Give the following matrix $\mathbf{C}$. $ \mathbf{C} = \begin{bmatrix} 3 & 2 \\ 4 & 1 \end{bmatrix} $

(b)(5%) Factor the matrix \( \mathbf{C} \) into a product \( \mathbf{XDX}^{-1} \), where \( \mathbf{D} \) is diagonal.