学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.65
所属科目:小学英语
找出属于不同类的单词
(  )1. A. good                             B. hello                        C. hi
(  )2. A. Mrs                           B. Miss                             C. Mr
(  )3. A. he                                  B. you                            C. she
(  )4. A. Tom                           B. Peter                              C. Alice
(  )5. A. pizza                         B. pies                               C. cakes
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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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