学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.64
所属科目:小学英语
看图听对话。根据听到的内容选择恰当的选项,将其标号填在题前的括号里。
(   )(1)Whose bed is two metres long?

(     )(2)What  has  Darning  got  in  his alhum?

(    )(3)When is Christmas?

(       ) (4)What does Peter do on weekends

( )(5)What do they often do together
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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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