Question

Se considera multimile A={ x E N* | x < 3} si B={ y E N* | y= x la 2 -1 , x E A }
Determinati :
( A reunit B ) intersectat ( B \ A) .
Ajutooor !!
Dau coroana

Answer 1

A={1;2}
B={1²-1;2²-1}
B={1-1;4-1}
B={0;3}, dar se spune multimea numerelor naturale nenule deci schimbam.

A={1;2}
B={3}
A reunit B intersectat B\A={1;2;3} intersectat {3}={3}