学进去-教育应平等而普惠
试题
类型:连线题
难度系数:0.85
所属科目:小学英语
1. classroom                                                         a. 窗户
2. window                                                              b. 电灯
3. blackboard                                                     c. 风扇
4. light                                                                        d. 地板
5. picture                                                                 e. 教室
6. door                                                                        f. 图画
7. computer                                                          g. 门
8. fan                                                                           h. 黑板
9. wall                                                                        i. 墙壁
10. floor                                                                   j. 计算机
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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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