f(x)=x^2+2xtanθ-1=(x+tanθ)^2-tan²θ-1
对称轴x=-tanθ
∵y=f(x)在[-1,√3]上是单调函数
∴-tanθ≤-1,或-tanθ≥√3
∴tanθ≥1,或tanθ≤-√3
∵θ∈(-π/2,π/2)
∴θ∈[π/4,π/2)U(-π/2,-π/3]
f(x)=x^2+2xtanθ-1=(x+tanθ)^2-tan²θ-1
对称轴x=-tanθ
∵y=f(x)在[-1,√3]上是单调函数
∴-tanθ≤-1,或-tanθ≥√3
∴tanθ≥1,或tanθ≤-√3
∵θ∈(-π/2,π/2)
∴θ∈[π/4,π/2)U(-π/2,-π/3]