Fie mulțimea A={-10;-9;-7;-3;0;2;3;9}.Determinați mulțimile: B={|a|\ a€A}; C={-|a|\ a€A}.

€-aparține


Răspuns :

B={10,9,7,3,0,2}
C={-10,-9,-7,-3,0,-2}
B={10,9,7,3,0,2,3,9}
C={-10,-9,-7,-3,0,-2}