学进去-教育应平等而普惠
试题
类型:改错
难度系数:0.65
所属科目:小学英语
改错。
1.Is there a post office near here? Yes, thereare. _______
A     B                       C    D
2.Thereis three bottles of milk in front of the door. _______
A    B        C      D
3.There have a meetingin the afternoon. _______
A     B     C       D
4.Aretheyany papers on the desk? _______
A   B   C              D
5.Thereisn'tanytigers in the zoo. _______
A    B   C   D
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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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