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 goes to work at half past seven.       B. He gets up at six o'clock.       C. He lives in a big city.
(     ) 2. A. You're welcome.          B. That's very, very early.          C. Thank you.
(     ) 3. A. Yes, he can.               B. No, he isn't at home.             C. Yes, I will.
(     ) 4. A. Yes, I do.                  B. No, she can't.                       C. I get up at six o'clock.
(     ) 5. A. We will have a good time.     B. I'll be home at seven o'clock.       C. I have lunch at home every 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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