When u = Z, a =, B = find CUA, cub

When u = Z, a =, B = find CUA, cub

Z is all integers
X = 2K indicates that set a is all even sets
X = 2K + 1 shows that B is the set of all odd numbers
And because the complete set is all integers
So CUA = B, Cub = a
That is to say, the complement of a is all odd and the complement of B is all even