已知集合A={X|Kπ+π/3≤Kπ+π/2,K∈Z.}B={X|x2-4≥0},則A ∩B=?
已知集合A={X|Kπ+π/3≤Kπ+π/2,K∈Z.}B={X|x2-4≥0},則A ∩B=?
其他人氣:106 ℃時(shí)間:2020-10-01 10:45:34
優(yōu)質(zhì)解答
A ∩B={X|Kπ+π/3≤Kπ+π/2,K∈Z,且k0}U[-2π /3,-2]
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