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
Listen and choose the word. 听音,选出你所听到的单词。
(     ) 1. A. angry       B. away       C. after
(     ) 2. A. beside       B. before       C. between
(     ) 3. A. medicine       B. mountain       C. minute
(     ) 4. A. right       B. invent       C. print
(     ) 5. A. won       B. what       C. went
(     ) 6. A. candy       B. carry       C. came
(     ) 7. A. dirty       B. during       C. dear
(     ) 8. A. fall       B. fifty       C. finish
(     ) 9. A. had       B. hurt       C. happen
(     ) 10. A. lose       B. look       C. lost
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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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