deletions | additions       diff --git a/data and analysis finding n.tex b/data and analysis finding n.tex  index d5aa88f..86566a4 100644  --- a/data and analysis finding n.tex  +++ b/data and analysis finding n.tex 
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Recall that n was found in correction $c_4$ as $n=1.2385$ and with some algebra it is found that $P=2-n^2=0.466$.  \Subsection{Error in n and P}  Error in n is found by the equation   \[ dn= \sqrt{\frac{\rho_s}{\rho}}\sqrt{(\frac{1/c_4})^2 \[dn= \sqrt{\frac{\rho_s}{\rho}}\sqrt{(\frac{1}{c_4})^2  dc_1^2 + (\frac{-c_1/c_4^2})^2} dc4^2}\] (\frac{-c_1}{c_4^2})^2} dc_4^2}\]