January 2019 1 261 Report
Wśród zbiorów: X,Y,Z wskaż parę zbiorów równych.
Proszę o obliczenia.
a) X=(-4;2>nC,
Y={x∈C :x²≤4},
Z={-3,-2,-1,0,1,2}

b) X= (2;7)u{7},
Y= <2;7>\{2},
Z= (2;4)u(4;7>

c) X={x∈N:|x|≤6}
Y=(-7;7)nN
Z= N\(5;8)
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