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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:0.65
所属科目:小学英语
听辨单词。
(      ) 1. A. money                      B. monkey                       C. donkey
(      ) 2. A. goat                       B. coat                           C. boat
(      ) 3. A. head                       B. bread                      C. read
(      ) 4. A. eight                            B. weigh                           C. sleigh
(      ) 5. A. wait                       B. rain                       C. train
(      ) 6. A. jeans                       B. chips                           C. socks
(      ) 7. A. ship                                B. shop                                C. sleep
(      ) 8. A. phone                              B. photo                                C. park
(      ) 9. A. day                           B. May                           C. say
(      ) 10. A. catch                            B. teach                            C. match
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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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