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。(听两遍)
(      )1. A. Wednesday                  B. Friday                    C. Monday
(      )2. A. pity                            B. today                      C. play
(      )3. A. monkey                         B. mango                  C. match
(      )4. A. sorry                            B. many                      C. any
(      )5. A. a cooking lesson             B. a singing lesson        C. a swimming lesson
(      )6. A. after school                  B. in the afternoon          C. after class
(      )7. A. play table tennis             B. play football             C. play basketball
(      )8. A. what about                    B. what time                 C. what day
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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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