deletions | additions       diff --git a/untitled.tex b/untitled.tex  index ee9f2fd..8f67ef4 100644  --- a/untitled.tex  +++ b/untitled.tex 
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\begin{equation}  D(Ax) = \left[ \begin{array}{ccc}  \frac{\partial (Ax)_1}{\partial x_1} & \cdots & \frac{\partial (Ax)_1}{\partial x_n} \\  \vdots & \vdots \ddots  & \vdots \\ \frac{\partial (Ax)_m}{\partial x_1} & \cdots & \frac{\partial (Ax)_m}{\partial x_n}  \end{array} \right]  = \left[ \begin{array}{ccc}