学进去-教育应平等而普惠
试题
类型:听音排序
难度系数:0.65
所属科目:小学英语
听录音,用字母A~E进行排序。
(      ) A. It’s in October. We’ll go to the Great Wall.
(      ) B. I like autumn, too. We usually have a school trip in autumn.
(      ) C. Great! When is the trip this year?
(      ) D. Cool! I love the Great Wall!
(      ) E. I like autumn. I really like the colors.
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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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