学进去-教育应平等而普惠
试题
类型:填空题
难度系数:0.94
所属科目:小学英语
选词填空。(7分)

(1)          shoes are these? They’re Nancy’s.
(2)          are you? Fine, thank you.
(3)          is this in English? It’s an umbrella.
(4)         is the book? It’s on the desk..
(5)         do you go to school? At seven forty.
(6)         is she? She is my sister.
(7)         nine and eleven? It’s twenty.
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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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