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
(1) —Hi, Chen Jie! This is Mark.
(      ) —Huh? No, it’s not. It’s warm!
(      ) —It’s rainy. How about Beijing? Is it cold?
(      ) —Hi, Mark! What’s the weather like in New York?
(      ) —26 degrees! That’s too cold!
(      ) —No, it isn’t. It’s 26 degrees.
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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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