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
听短文,根据所听内容判断下列句子正误,正确的在括号里写“T”,错误的写“F”。
_____ 1. Simon is in America now.
_____ 2. Beijing has got about twenty million people.
_____ 3. There are some pictures of the Great Wall.
_____ 4. The Great Wall is more than twenty thousand metres long.
_____ 5. These postcards are very good.
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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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