学进去-教育应平等而普惠
试题
类型:听音,选择听到的内容
难度系数:0.85
所属科目:小学英语
听录音,选出听到的单词或句子。
(      ) 1. A. clock       B. coffee
(      ) 2. A. straight       B. right
(      ) 3. A. tree       B. turn
(      ) 4. A. walk       B. jump
(      ) 5. A. salad       B. sad
(      ) 6. A. It’s next to the house.       B. It’s next to the table.
(      ) 7. A. Can you make noodles?       B. Can you swim?
(      ) 8. A. I have short hair and big eyes.       B. I have long hair and small eyes.
(      ) 9. A. What are they doing there?       B. Where are they going?
(      ) 10. A. There is a girl in this photo.       B. There are three boys in this photo.
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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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