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1)elementele multimii A={xeZ | x > -2 si x <3} sunt:

2)daca A={ xeZ | |x| < 3} si B={xeZ* | |x| = -x} atunci A B este egala cu


Răspuns :

1) x€{-1,0,1,2} deci A={-1,0,1,2}
2) x={-2,-1,0,1,2} deci A={-2,-1,0,1,2}
x={1,2,3...} deci B={1,2,3...}
AUB=R