学进去-教育应平等而普惠
试题
类型:听音判断
难度系数:0.65
所属科目:小学英语
听一段独白,判断下列句子的正确(T)或错误(F)。
(     ) 1. Jack is a new student in this school.
(     ) 2. Jack can’t read books in the library.
(     ) 3. Jack should listen to the teachers in class.
(     ) 4. School starts at half past seven in the morning.
(     ) 5. Jack can have lunch at school.
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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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