wyznacz zbiory:
AvB, A∧B, A\B, B\A
A= (-4;2> u {9}
B = <2;5) u <9;∞)
AuB=(-4,5)u<9,∞)
AnB={2,9}
A\B=(-4,2)
B\A=(2,5)u(9,∞)
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AuB=(-4,5)u<9,∞)
AnB={2,9}
A\B=(-4,2)
B\A=(2,5)u(9,∞)