求函数y=2sin(2x十1/3兀),x∈[一1/6兀,1/6兀]的值域

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y=2sin(2x十π/3)
x∈[-π/6,π/6]
2x∈[-π/3,π/3]
2x+π/3∈[0,2π/3]
2x+π/3=0时,ymin=0
2x+π/3=π/2时,ymax=2
值域【0.2】

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