Question

Seja A ={-1,0,2} e B={2,3} calcular:
a)AxB
b)BxA
c)A²
d)B²

Answer 1

a) A X B = (-1,2),(-1,3),(0,2),(03),(1,2),(1,3),(2,... 
b) B X A = (2,-1),(2,0),(2,1,),(2,2),(3,-1),(3,0),(... 
c) A X A = A²=(-1,-1),(-1,0),(-1,1),(-1,2),(0,-1),(... 
d) B X B = B²=(2,2),(2,3),(3,2),(3,3)