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,选出能对每个问句作出适当反应的答语代号。
(      ) 1. A. Here you are.             B. Nice to meet you.             C. Glad to see you.
(      ) 2. A. I’m five.                    B. I’m fine.                           C. I’m a pupil.
(      ) 3. A. It’s sunny.                    B. It was sunny.                    C. I will be sunny.
(      ) 4. A. Yes, of course.             B. Yes, it is.                           C. Yes, I do.
(      ) 5. A. Peter is taller.             B. Mike is taller.                    C. Mike is shorter.
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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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