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
1. pencil case                                   a. 书
2. eraser                                          b. 书包
3. book                                          c. 尺子
4. pencil                                          d. 铅笔
5. pen                                           e. 蜡笔
6. crayon                                        f. 钢笔
7. school bag                                   g. 橡皮
8. ruler                                          h. 铅笔盒
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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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