学进去-教育应平等而普惠
试题
类型:排序题
难度系数:0.65
所属科目:小学英语
Hanhan正在和来自英国的新朋友Tin一起看一本关于北京的书。


(     ) Beijing is a big and beautiful city.
(     ) Look! This is the Tian'anmen Square.
( 1 ) What's that, Hanhan?
(     ) Wow, it's very big.
(     ) It's a book about Beijing.
(     ) Yes, and it's very famous.
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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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