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。
(     ) 1. A. address                    B. age                    C. around
(     ) 2. A. Chinatown              B. chopsticks              C. collect
(     ) 3. A. lantern                    B. librarian              C. library
(     ) 4. A. million                    B. meal                    C. member
(     ) 5. A. race                    B. right                    C. rule
(     ) 6. A. shop                    B. should                    C. sound
(     ) 7. A. special                    B. story                    C. strong
(     ) 8. A. then                    B. thousand              C. together
(     ) 9. A. problem                    B. pleased              C. played
(     ) 10. A. bamboo                    B. body                    C. believe
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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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