学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.94
所属科目:小学英语
找出合适的答句,将序号填在括号内。
( )(1)Is that a camera?       
( )(5)Can I have a look?       E. It’s a computer.
A.Thank you. ()(2)What a nice jacket !B.Yes,it is.()(3)May I come in?C.Sure. ()(4)what’s this on the desk?D.come in, please .
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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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