Question

Va rog frumos....exercițiul 2

Answer 1

|x|</ 3 
x</ 3 sau x</ -3 => M={-3,-2,-1,0,1,2,3}

3</ x<6 => N={3,4,5}

MxN={(-3,3),(-3,4),(-3,5),(-2,3),(-2,4),(-2,5),(-1,3),(-1,4),(-1,5),(0,3),(0,4),(0,5),(1,3),(1,4),(1,5),(2,3),(2,4),(2,5),(3,3),(3,4),(3,5)}
NxM={(3,-3),(3,-2),(3,-1),(3,0),(3,1),(3,2),(3,3),(4,-3),(4,-2),(4,-1),(4,0),(4,1),(4,2),(4,3),(5,-3),(5,-2),(5,-1),(5,0),(5,1),(5,2),(5,3)}

Answer 2

M={-3;-2;-1;0;1;2;3}
N={3;4;5}

MxN= {(-3;3): (-3;4) (-3;5)
            (-2;3)............(-2;5)
            ......................
             (2;3) (2;4);(2;5);
             (3;3) (3;4) (3;5)}



NxM={(3;-3); (3;-2) (3;-1);(3;0) (3;1); (3;2);(3;3)
          (4;-3).................................................(4;3)
           (5;-3)................................................(5;3)}