学进去-教育应平等而普惠
试题
类型:听力题
难度系数:0.65
所属科目:小学英语
听问句,选答语。
____)1.A. Yes, I am.    B. No,there isn't.   C. Yes, it is.
____)2.A. Yes, she is.  B. Her birthday is on June 3rd.  C. I cook noodles for her.
____)3.A. I'm making a birthday card.     B. I will make a card.  C. I love her.
____)4.A. Yes, it is.  B. No, I am not.  C. It's in May.
____)5.A. Your birthday is on Dec.30th.   B. I have a birthday cake.  C. It's June 1st.
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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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