deletions | additions       diff --git a/untitled.tex b/untitled.tex  index 6b608f2..8db89ec 100644  --- a/untitled.tex  +++ b/untitled.tex 
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\textit{Oh, an empty article!}   \begin{eqnarray}  y=f(x) h_1=-\sqrt{2g}\frac{a_1}{A_1}\Delta h_1+ \frac{\Delta h1}{A_1}  \end{eqnarray}