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画y=tanx图像
y-tanx在(kπ-π/2,kπ+π/2)上是增函数
tan(x+π/6)≤根号3=tanπ/3
kπ-π/2<x+π/6<=kπ+π/3
kπ-2π/3<x<=kπ+π/6
不等式:tan(x+π/6)≤根号3的解为
kπ-2π/3<x<=kπ+π/6 k∈Z
y-tanx在(kπ-π/2,kπ+π/2)上是增函数
tan(x+π/6)≤根号3=tanπ/3
kπ-π/2<x+π/6<=kπ+π/3
kπ-2π/3<x<=kπ+π/6
不等式:tan(x+π/6)≤根号3的解为
kπ-2π/3<x<=kπ+π/6 k∈Z
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