Lösung Schreibweisen

1. \(\textbf{A} = \{x \mid -1 < x \le 2 \} = \left]-1;2\right]\)
2. \(\textbf{B} = \{x \mid x > 1 \} = \left]1;\infty\right[\)

Schreibe als Menge:

3. \(\textbf{C} = \left[1; 3\right[ = \{x \mid 1 <= x < 3 \}\)
4. \(\textbf{D} = \left]-\infty; 7\right] = \{x \mid x \le 7 \}\)