Small fix in lecture 9 master theorem
Small fix in lecture 9 master theorem

TobiasFaller/AlgoDat,TobiasFaller/AlgoDat,BackofenLab/AlgoDat,TobiasFaller/AlgoDat,BackofenLab/AlgoDat,TobiasFaller/AlgoDat,TobiasFaller/AlgoDat,BackofenLab/AlgoDat,BackofenLab/AlgoDat,BackofenLab/AlgoDat