学进去-教育应平等而普惠
试题
类型:匹配题
难度系数:0.85
所属科目:小学英语
根据问句选择相应的答句,将其序号填在括号内。
A. Six birds.
B. It is a big fish.
C. Yes, it is.
D. I’m fine. Thank you.
E. She is my friend.
1.How are you? (     )
2.Who is she? (     )
3.How many birds? (     )
4.Is this a book? (     )
5.What is it? (     )
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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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