tanx大于等于0,tanx大于等于根号3
求X的定义域,怎么算啊,
人气：433 ℃ 时间：2020-01-29 03:30:47
解答
tanx>=0
就是 x ∈ [kπ,kπ+π/2),k ∈ Z
tanx>=√3=tan(π/3)
就是 x ∈ [kπ+π/3,kπ+π/2),k ∈ Z
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