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.A: When was Mike born? (      )
B: He was born on January 24th.
2.A: What’s the weather like there? (      )
B: It’s snowy.
3.A: What should Bob take with him? (      )
B: He should take some sweaters.
4.A: What does your mother do? (      )
B: She is a teacher.
5.A: You look excited. Why? (      )
B: I was excited because I won the game.
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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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