学进去-教育应平等而普惠
试题
类型:句图匹配
难度系数:0.65
所属科目:小学英语
A.        B. C.        D.        E.
1.—Where are the books? (      )
—They are on the table.
2.—Can I have a knife and fork, please? (      )
—Sure.
3.—How many birds are there on the tree? (      )
—Five.
4.—What would you like for dinner, Ann? (      )
—I’d like some beef.
5.—What’s in the classroom? (      )
—A board, two lights, many desks and chairs.
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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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