学进去-教育应平等而普惠
试题
类型:连线题
难度系数:0.65
所属科目:小学英语
对话连线
1. Do you think it’s important to work hard?    a. Yes, I always dry the dishes after dinner.
2. Do you help your family?                 b. That’s good.
3. I often water the flowers at home.           c. Yes, I do. I work hard at school.
4. What else do you do at home?              d. I have fun with my friends .
5. Do you have fun with your friends?         e. I clean my bedroom on Saturday at home.
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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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