学进去-教育应平等而普惠
试题
类型:选内容补全对话
难度系数:0.85
所属科目:小学英语
Kate: 1., Lisa. Is this your skirt?
Lisa: 2.
Kate: What's in the box?
Lisa: A skirt, too.
Kate: 3.
Lisa: It's yellow and green. 4.
Kate: Yes, it is.
Lisa: 5.
Kate: Thank you!
A.Yes, it is.
B.Is it your skirt?
C.What colour is it?
D.Excuse me
E.Here you are.
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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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