deletions | additions       diff --git a/a) Complexity.tex b/a) Complexity.tex  index ad89ba7..ad4cedd 100644  --- a/a) Complexity.tex  +++ b/a) Complexity.tex 
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\begin{subequations}  \begin{align*}  C(0) &= 1\\  C(n) &= c + \sum_{i = 0}^{n-1} C(i)\\  &= C(i) =  c + \sum_{i = 0}^{n-2} C(i) + C(n-1)\\ &= 2(c + \sum_{i = 0}^{n-1} C(i))\\  C(n-1) &= c + \sum_{i = 0}^{n-2} C(i)\\  C(n) &= 2(c + \sum_{i = 0}^{n-2} C(i))\\  &= C(i)) =  2C(n-1) \end{align*}  \end{subequations}