第6章 6.3

(1)

AB={x0<x2}A \cap B = \{x \mid 0 < x \leq 2\}

(2)

AB={x2x<3}A \cup B = \{x \mid -2 \leq x < 3\}

(3)

A={xx<2, 2<x}\overline{A} = \{x \mid x < -2,\ 2 < x\}

(4)

B={xx0, 3x}\overline{B} = \{x \mid x \leq 0,\ 3 \leq x\}

AB={xx0, 2<x}\overline{A} \cup \overline{B} = \{x \mid x \leq 0,\ 2 < x\}

(5)

AB={xx<2, 3x}\overline{A} \cap \overline{B} = \{x \mid x < -2,\ 3 \leq x\}

解説: r31bn1z