Respostas

2013-09-19T14:54:31-03:00
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)