Question

Determinati multimile : A={ x € Z | |x-4|<_7} si B= { x€Z| |- x+2|=5}

Answer 1

[tex]Multimea~ A \\ |x-4| \leq 7 \\ -7 \leq x-4 \leq 7~|+4 \\ -3 \leq x \leq 11 \\ x=[-3,-2,-1,...11] \\ Multimea~B \\ |-x+2|=5 \\ -x+2=5 \\ -x=3 \\ x=-3 \\ -x+2=-5 \\ -x=-7 \\ x=7 \\ x=[-3,7][/tex]