Question
If $A = \begin{bmatrix} x & 1 \\ 1 & x \end{bmatrix}$ and $B = \begin{bmatrix} 1 & 1 \\ x & 1 \end{bmatrix}$, then $\frac{dA}{dx} = \_\_\_\_$
If $A = \begin{bmatrix} x & 1 \\ 1 & x \end{bmatrix}$ and $B = \begin{bmatrix} 1 & 1 \\ x & 1 \end{bmatrix}$, then $\frac{dA}{dx} = \_\_\_\_$