clean tex files

tutorial-4/sheet04.tex

@@ -143,6 +143,7 @@ Consider an electricity market with two generator types, one with variable cost
  \item Determine the optimal rate of production of the generators and the value of all KKT multipliers. What is the interpretation of the respective KKT multipliers?
 \end{enumerate}
 
+\newpage
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 \paragraph{Problem IV.3 \normalsize (efficient dispatch in a two-bus power system).}~\\
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