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
听录音,根据短文内容判断正误,正确的用“T”表示,错误的用“F”表示。(听两遍)
(      ) 1. It was Saturday yesterday.
(      ) 2. Sam bought a heavy bag.
(      ) 3. Amy wanted to buy a dress.
(      ) 4. The white dress was too small for Amy.
(      ) 5. Amy bought a red dress at last.
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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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