deletions | additions       diff --git a/formula_ror2.tex b/formula_ror2.tex  index 4d69c52..0bd3b67 100644  --- a/formula_ror2.tex  +++ b/formula_ror2.tex 
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\begin{equation}  \label{formula:ror2}  \begin{equation}  riq = \frac{\sqrt{tori}}{{y}}  \end{equation}