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,选出你所听到的单词或短语。
(     ) 1. A. garden             B. library       C. sunny
(     ) 2. A. shirt             B. T-shirt       C. skirt
(     ) 3. A. pants             B. socks       C. shorts
(     ) 4. A. how old       B. how many       C. how much
(     ) 5. A. get up             B. go home       C. go to bed
(     ) 6. A. sheep             B. cheap       C. soup
(     ) 7. A. how             B. now       C. cow
(     ) 8. A. goat             B. great       C. grape
(     ) 9. A. really             B. rainy       C. ready
(     ) 10. A. just             B. jacket       C. first
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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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