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:0.85
所属科目:小学英语
听录音,选出与你所听到句子对应的答语,将其代号填入题前括号中。每小题读两遍。
_____) 1. A. At 6:30 am.   B. On Sunday.   C. In January.
_____) 2. A. I can go swimming.   B. I'm reading a book.    C. I like dance.
_____) 3. A. It's a picture.   B. It's yellow.   C. It's mine.
_____) 4. A. It's in the room. B. It's yours. C. It's on June 1st.
_____) 5. A. Yes, you can.   B. No, you can't.   C. Sure.
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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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