学进去-教育应平等而普惠
试题
类型:听力题
难度系数:0.85
所属科目:小学英语
听录音,选择正确的应答语。
____)1. A. Me, too!      B. Happy birthday!      C. Thank you!
____)2. A. Yes, it is.   B. The reading festival is today. C. The reading festival is on June 3rd.
____)3. A. My birthday is on December 30th.   B. I have a party on my birthday.   C. I will get some gifts.
____)4. A. I’m making a birthday card.   B. I will make a card for her. C. I will eat delicious food.
____)5. A. Yes, it is.      B. Yes, I am.      C. Yes, I can.
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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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