x= { -1, 1, 2 } and y = { -2, -1, 0, 1, 2 }
The positive ones are
(-1)^(-2) = 1 (1)^(-2) = 1 (2)^(-2) = 1/4
(-1)^0 = 1 (1)^(-1) = 1 (2)^(-1) = 1/2
(-1)^2 =1 (1)^(0) = 1 (2)^(0) = 1
(1)^(1) = 1 (2)^(1) = 2
(1)^(2) = 1 (2)^(2) = 4
There are 5 distinct values