若集合A={x|log(1/2)x≥1/2},则CRA=
问题描述:
若集合A={x|log(1/2)x≥1/2},则CRA=
(1/2)是底数
A,(-无穷大,0】∪(√2/2,+无穷大)B,(√2/2,+无穷大)C,(-无穷大,0∪【√2/2,+无穷大)D,【√2/2,+无穷大)
答
log(1/2)x≥1/2解得0