deletions | additions       diff --git a/d) Quicksort average complexity.tex b/d) Quicksort average complexity.tex  index 2241b2a..17c8043 100644  --- a/d) Quicksort average complexity.tex  +++ b/d) Quicksort average complexity.tex 
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\begin{subequations}  \begin{align*}  C(n) = \begin{cases}  1 & \text{if } n = 1\\ 0\\  \frac{2}{n} \displaystyle\sum_{i=0}^{n-1} \left[ C(i) \right] + n & \text{if } n > 0  \end{cases}  \end{align*}  \end{subequations}