Sjednocení intervalů A a B
Urči sjednocení intervalů A=(-2 ; 2\rangle a B=\langle 0 ; 4).
K=A \cup B=(-2 ; 2\rangle \cup\langle 0 ; 4)=(-2 ; 4)
K=A \cup B=(-2 ; 2\rangle \cup\langle 0 ; 4)=(-2 ; 2)
K=A \cup B=(-2 ; 2\rangle \cup\langle 0 ; 4)=(-2 ; 3)
K=A \cup B=(-2 ; 2\rangle \cup\langle 0 ; 4)=(0 ; 4)
Uděláš tedy sjednocení dvou intervalů A a B a získáš tak nový interval, který bude obsahovat čísla, která jsou alespoň v intervalu A nebo v B.
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