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
听五组对话,请你根据听到的内容选择正确的选项。(10分)
(1)A. Yes she does.                B. No. she doesn’t.
(2)A. To the bookstore          B. To the hospital
(3)A. She likes playing the violin.B. She likes collecting stamps.
(4)A. My mother is an artist.    B. My mother is an actress.
(5)A. He is going to the shop.     B. He is going to plant seeds.
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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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