学进去-教育应平等而普惠
试题
类型:其他
难度系数:0.65
所属科目:小学英语
读句子,为图片选择对应句子的序号并连接对应时间。
1. My mother makes the bed at 7:10 a.m.
2. My father waters the plants at 9:20 a.m.
3. Mum cooks the meal at 12:00 o’clock. I help her.
4. I sweep the floor at 2:00 p.m.
5. My sister watches TV at 8:00 p.m.
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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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