函数y＝2sinx的值域是（）．a.(－2, 2)b.(0, 2)c.[0, 2]d.[－2, 2] - 查题网

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国家开放大学 / 高等数学基础

函数y＝2sinx的值域是（）．

a.
(－2, 2)

b.
(0, 2)

c.
[0, 2]

d.
[－2, 2]

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高等数学基础

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