Let us consider the matrix $A$ which has three parameters $R,C1,C3$ \begin{equation*} A = \begin{bmatrix} \cos(\tau) + x \frac{\partial}{\partial x} \cos \tau - y\frac{\partial}{\partial x}\sin\tau & x\frac{\partial}{\partial y} \cos \tau - \sin \tau - y \frac{\partial}{\partial y} \sin \tau\\ \...