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学进去-教育应平等而普惠
试题
类型:听长对话回答问题
难度系数:0.65
所属科目:初中英语
听对话,回答下列小题。
1.How long is the holiday?
A.Two days.B.Three days.C.Four days.
2.How many times has the woman been to the art museum?
A.Once.B.Twice.C.Three times.
3.Where are the two speakers going?
A.The art museum.B.The space museum.C.The water park.
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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 = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19

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 = arcsin x, x∈[–1,1], y∈[–π/2,π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2

用户名称
2019-09-19
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