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
听录音,选择正确的答句。(听两遍)
(     ) 1. A. He is a worker.     B. He is swimming in the sea.     C. He can play football well.
(     ) 2. A. I went there by bike.     B. I went to the park with my friends.       C. I arrived in Beijing at ten o'clock.
(     ) 3. A. This is my new bike.          B. It's my uncle.          C. He is studying English.
(     ) 4. A. We'll fly kites in the park.     B. I'll be home at eight o'clock.       C. I get up at six o'clock every morning.
(     ) 5. A. Thank you.     B. I'm ten years old.   C. I want to buy a birthday cake for my son.
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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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