学进去-教育应平等而普惠
试题
类型:听音,选择正确答案
难度系数:0.65
所属科目:小学英语
听音,选出正确的答语。每小题读两遍。
(      )1. A. They will go on a trip.          B. Hooray.                      C. We will go to Beijing at 8:00 in the morning.
(      )2. A. He works at a hospital.          B. He is a farmer.          C. He goes to work by bike. '
(      )3. A. In the evening                      B. By plane.                 C. We will buy new clothes.
(      )4. A. She is tall                            B. He has a brother.          C. she likes to go shopping
(      )5. A. I love big dinners.                 B. We eat Zongi.               C. The Spring Festival.
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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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