%%%%%%%%%%%%%%%%%%%%%%%%%%% %%%%%%%%%%%%%%%%%%%%%%%%%%% %7 %%%%%%%%%%%%%%%%%%%%%%%%% \chapter{Prove that $\overline{A \cap B} = \overline A \cup \overline B$.} \begin{remark*} To prove that two sets are equal, give a double containment argument. \end{remark*} \section{First draft} Due Wednesday, March 2 at 6:00 PM. \begin{proof} \end{proof}