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
选择正确的答案。
A. I am in the bedroom.
B. My name is Dong Dong.
C. Yes, it is.
D. They are on the shelf.
E. No, they aren't.
[[QOrDeR]]Where are my books? (______
【小题2】Are they on the desk? (______
【小题3】Where are you? (______
【小题4】Is it a nice room? (______
【小题5】What’s your name? (______
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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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