deletions | additions       diff --git a/a) Complexity.tex b/a) Complexity.tex  index 128e991..ad89ba7 100644  --- a/a) Complexity.tex  +++ b/a) Complexity.tex 
...
C(0) &= 1\\  C(n) &= c + \sum_{i = 0}^{n-1} C(i)\\  &= c + \sum_{i = 0}^{n-2} C(i) + C(n-1)\\  &= 2(c + \sum_{i = 0}^{n-1} C(i)\\ C(i))\\  C(n-1) &= c + \sum_{i = 0}^{n-2} C(i)\\  C(n) &= 2(c + \sum_{i = 0}^{n-2} C(i))\\  &= 2C(n-1)