学进去-教育应平等而普惠
试题
类型:句子匹配
难度系数:0.65
所属科目:小学英语
读句子,选择正确的答语。
(      )1. Where is Fangfang?                                     A. Lingling is singing a song.
(      )2. What are the lions doing?                            B. Yes, it is.
(      )3. What is Lingling doing?                              C. Yes, they are.
(      )4. Are the children very happy?                       D. She's at the beach with her family.
(      )5. Is it Children's Day?                                   E. They are drinking.
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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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