Exercice
Dans le référentiel \( \mathcal{E}=\left\{ v_{1} , v_{2} , v_{3} , v_{4} , v_{5} \right\}\) , on considère les sous-ensembles \( A=\left\{ v_{1} , v_{2} , v_{4} \right\}\) et \( B=\left\{ v_{2} , v_{4} \right\}\) . Donner en extensions les sous-ensembles suivants.
- \( \overline{B} = \) \hfill 0.5
- \( A \cup B = \) \hfill 0.5
- \( A \cup \overline{B} = \) \hfill 0.5
- \( \overline{A \cap B} = \) \hfill 1
- \( \overline{A \cup \overline{B} } = \) \hfill 1
- \( A\cup\left( \overline{ \overline{A} \cup \overline{B} } \right) = \) \hfill 1
- \( \overline{A} \cap\left(A \cup \overline{B} \right) = \) \hfill 1
- \( \mathcal{P}\left(\left( \overline{A \cap \overline{B} } \right)\cap\left( \overline{ \overline{A} \cup B} \right)\right) = \) \hfill 1.5
- \( \mathcal{P}\left(\left( \overline{ \overline{A} \cap \overline{B} } \right)\cap\left( \overline{ \overline{A} \cup \overline{B} } \right)\right) = \) \hfill 1.5