deletions | additions       diff --git a/a) Number of blits.tex b/a) Number of blits.tex  index e7f7ffe..727e518 100644  --- a/a) Number of blits.tex  +++ b/a) Number of blits.tex 
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&= \frac{5 * 4^{n+1} + 5 * 3 - 5 * 4}{3}\\  &= \frac{5 * 4^{n+1} - 5}{3}\\  T(n) &= \frac{5 \cdot 4^{\log(n)} - 5}{3}\\  &= \frac{5 * (2^2)^{\log(n)} \frac{5(2^2)^{\log(n)}  - 5}{3}\\ &= \frac{5 * n^2 \frac{5n^2  - 5}{3}\\ T(n) &\in \mathcal{O}(n^2)  \end{split}  \end{equation}