 = \begin{bmatrix} \frac{\partial w}{\partial x}&\frac{\partial w}{\partial y}&\frac{\partial w}{\partial z}\\                             \frac{\partial h}{\partial x}&\frac{\partial h}{\partial y}&\frac{\partial h}{\partial z}\\                              \frac{\partial r}{\partial x}&\frac{\partial r}{\partial y}&\frac{\partial r}{\partial z}\\ \end{bmatrix}_{