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,根据所听对话和问题,选出正确的答案。(听两遍)
(      ) 1. A. It's Monday.                 B. It's Tuesday.                 C. It's Wednesday.
(      ) 2. A. Yang Ling.                  B. Su Hai.                       C. Su Yang.
(      ) 3. A. Yes, they do.               B. Yes, we do.                    C. No, they don't.
(      ) 4. A. They get up at seven every day.       B. They wake up at seven every day.
C. They get up at six every day.
(      ) 5. A. It's on the sofa.             B. It's on the desk.             C. It's on Mike's head.
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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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