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学进去-教育应平等而普惠
试题
类型:句子配对
难度系数:0.65
所属科目:初中英语
Choose the sentences from the box to complete the dialogue. (There are two extra sentences.)
1.Jack isn’t here today. Is he ill?2.Shall we join in the summer camp?3.Can I use your dictionary?4.What’s wrong with you?5.What is your new English teacher like?A. Good ideaB. I’m afraid so.C. Relax.D. She is friendly.E. Come on, better get going!F. Well, I’ve got a pain in my head.G. No problem.

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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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