Question

A diferença A - B, sendo A= { x € R / -4 _< x _< 3} e B= { x € R / -2 _< x < 5} é igual a?????

Answer 1

A{ 3,2,1,0,-1,-2,-3,-4}
B{5,4,3,2,1,0,-1,-2}

A-B= {5,4,-4}