[[QOrDeR]]
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【小题2】
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【小题3】
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【小题4】
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【小题5】
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![]() 同类型试题![]() y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴 ![]() ![]() y = sin x, x∈R, y∈[–1,1],周期为2π,函数图像以 x = (π/2) + kπ 为对称轴 ![]() ![]() 我要答疑
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