deletions | additions       diff --git a/P1.tex b/P1.tex  index 3c82fcd..063d45f 100644  --- a/P1.tex  +++ b/P1.tex 
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$f(n) = O(g)$  \item  $f(n)=\sum{k=1}^n $f(n)=\sum{k=1}^{n}  k, g(n)=(n+2)^2$ \end{enumerate}