满足tan(x-π/4)>=1的x的集合
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满足tan(x-π/4)>=1的x的集合满足tan(x-π/4)>=1的x的集合满足tan(x-π/4)>=1的x的集合tan(x-π/4)>=1=tan(kπ+π/4)kπ+π/4
满足tan(x-π/4)>=1的x的集合
满足tan(x-π/4)>=1的x的集合
满足tan(x-π/4)>=1的x的集合
tan(x-π/4)>=1=tan(kπ+π/4)
kπ+π/4