deletions | additions       diff --git a/d) Quicksort average complexity.tex b/d) Quicksort average complexity.tex  index 49783b7..c4dac7d 100644  --- a/d) Quicksort average complexity.tex  +++ b/d) Quicksort average complexity.tex 
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We know that: \[(n-x)C(n-x) = 2 \sum_{i=0}^{n-1-x} \left[C(i)\right] + n^2 + x^2 - 2nx\]  We compute $nC(n)$ and$(n-1)