deletions | additions       diff --git a/b) Dynamic programming.tex b/b) Dynamic programming.tex  index a9b02d9..44caae8 100644  --- a/b) Dynamic programming.tex  +++ b/b) Dynamic programming.tex 
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T(n) &= n + n + \sum_{i=0}^{n-1} \left[i-1\right]\\  &= 2n + \sum_{i=0}^{n-1} i + \sum_{i=0}^{n-1} 1\\  &= 3n + \frac{n(n-1)}{2}\\  &= \frac{5n + n^2}{2} n^2}{2}\\  &\in \mathcal{O}(n^2)  \end{align*}  \end{subequations}