zaznacz na osi liczbowe przedziały A i B a następnie wyznacz zbiory AuB , AnB , A\B .
a) A=<-2,2> , B=(0,+nieskończoność)
b) A=<-5,5> , B=(1,7)
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a)
B o---------------------------
A *------------------*
I----I----I----I----I----I----I----I---->
-3 -2 -1 0 1 2 3
A u B = <-2, +oo)
A n B = (0, 2>
A \ B = <-2, 0>
b)
B o----------------------------o
A *-----------------------------------------------*
--I----I----I----I----I----I----I----I----I----I----I----I----I------->
-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6
A=<-5,5> , B=(1, 7)
A u B = <-5, 7)
A n B = (1, 5>
A \ B = <-5, 1>
B (---------------------------
A <------------------>
I----I----I----I----I----I----I----I----I
-3 -2 -1 0 1 2 3 4
AuB = <-2, +∞)
AnB = (0, 2>
A\B = <-2, 0>
B (----------------------------)
A <---------------------------------------------->
I----I----I----I----I----I----I----I----I----I----I----I----I----I----I
-6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 7 8
AuB = <-5, 7)
AnB = (1, 5>
A\B = <-5, 1>