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:0.94
所属科目:小学英语
听录音,选出句中你听到的单词或短语。(听两遍)
(      ) 1. A. Miss Li                  B. Mr Green               C. Miss Green
(      ) 2. A. ball                       B. dog                       C. door
(      ) 3. A. close                      B. come                    C. class
(      ) 4. A. sit                           B. sorry                    C. stand
(      ) 5. A. come in                  B. sit down                 C. stand up
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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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