Question

va rog urgent !!! dau coroana la primul (și corect) raspuns+20 puncte

Answer 1

A={x|x apartine N, 2x<11} =>

2x<11 | :2 => x<11/2

x< 5,5 => x apartine {0, 1, 2, 3, 4, 5} => A={0, 1, 2, 3, 4, 5}

B={x|x apartine Z, |2x|<17}

|2x|<17 = -17 < 2x < 17|:2

-17/2 < x <17/2

-17/2 = -8,5

17/2= 8,5 => x apartine {-8; -7; -6; -5; -4; -3; -2; -1; 0; 1; 2; 3; 4; 5; 6; 7; 8}

C={x| x apartine N, 24 divizibil cu x} => x divizor al lui 24

x apartine {D24}

x apartine {1, 2, 3, 4, 6, 12, 24}