学进去-教育应平等而普惠
试题
类型:听音,选择正确答案
难度系数:0.65
所属科目:小学英语
听录音,选出对应的应答句,将序号写在题前括号内。
(      ) 1. A. Yes, there is.        B. Yes, it is.        C. Yes, please.
(      ) 2. A. Yes, it is my pen.        B. Yes, it’s brown.        C. No, it isn’t.
(      ) 3. A. That’s my cousin.        B. It’s a pig.        C. It’s white.
(      ) 4. A. It’s on the table.        B. It’s for Tina.        C. It’s time for lunch.
(      ) 5. A. I know the time.        B. All right, Mum.        C. Hurry up!
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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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