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Urgentttt!!! dau coroana
Fie funcția: f:A->B
unde A={1,2,3,4,5,6}
B={-1,0,1,2,3}
iar legea de corespondență
f(1)=0
f(2)=f(5)=-1
f(3)=2
f(4)=3
f(6)=1