学进去-教育应平等而普惠
试题
类型:句子匹配
难度系数:0.65
所属科目:小学英语
请给问语选择合适的答语。
(       ) 1. What time is it?                             A. Yes, it is.
(       ) 2. Where is your classroom?                 B. It’s on the first floor.
(       ) 3. Let’s run.                                      C. It’s 10:30.
(       ) 4. Do you have a library?                    D. Yes, I do.
(       ) 5. Is this your schoolbag?                    E. OK.
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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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