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学进去-教育应平等而普惠
试题
类型:按要求填空
难度系数:0.65
所属科目:小学英语
阅读句子,在Words box中选出与句子意思相同的词。
A. candy     B. stranger     C. London     D. farm     E. post office
1.You can buy stamps there. (      )
2.It’s sweet. Children like to eat it. (      )
3.You can see some animals there. (      )
4.It’s a big city, it’s in England. (      )
5.It’s the first time to see this person. (      )
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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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