若全集U={x丨x=1/2n,n∈Z},A={x丨x=n,n∈Z},求∁UA.

问题描述:

若全集U={x丨x=

1
2
n,n∈Z},A={x丨x=n,n∈Z},求∁UA.

∵全集U={x丨x=

1
2
n,n∈Z},A={x丨x=n,n∈Z},
∴∁UA={x|x=
2n+1
2
,n∈Z}.