deletions | additions       diff --git a/paragraph_2_Mimic_the_derivation__.tex b/paragraph_2_Mimic_the_derivation__.tex  index 6a69d71..b7df93c 100644  --- a/paragraph_2_Mimic_the_derivation__.tex  +++ b/paragraph_2_Mimic_the_derivation__.tex 
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\[u + f(u)_{x} + g(u)_{y} = 0 \]  where   $\rho $  \[ \left \{  \begin{tabular}{ccc} \alpha(x)=\left\{  \begin{array}{ll}  \rho\\  \rho & & \\  \rho u & &\\ u\\  \rho v& &\\  E & &  \\ \end{tabular}  \right \} E   \end{array}  \right.  \]