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
读一读,连一连。
1. Why was Wang Hong sad?                           a. Sure.
2. What’s Jenny doing?                                  b. She lost her cap.
3. Can I open it?                                        c. Yes, they were.
4. What subjects does she have?                     d. She’s singing in the rain.
5. Were Mr Wang’s pupils back at school?        e. She has science, art and French.
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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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