# Operate partial derivative as ratio?

by alctel
Tags: derivative, operate, partial, ratio
 P: 2 Suppose $x\in\Re^{m}$, $y\in\Re^{n}$, $A\in\Re^{m\times n}$, and $\frac{\partial x}{\partial y}=A$ Then is this step correct (operate like a ratio)? ${\partial x}=A {\partial y}$