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学进去-教育应平等而普惠
试题
类型:连线题
难度系数:0.65
所属科目:小学英语
读一读,把句子正确配对。
1. Do you eat dumplings and fish           
A.on the doors and windows.
2. I always do some cleaning
B.on New Year’s Eve?
3. People put some red paper
C.with money at the festival?
4. We’ll climb mountains
D.and shopping before the festival.
5. Will you get some red packets           E. at the Double Ninth Festival.
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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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