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
读对话,在可吃/喝的食物旁打“√”,不可吃/喝的食物旁打“×”。
1. A: Can I have a drink?
B: Yes, you can.
2. A: Can I have some soup?
B: No, you can’t.
3. A: Can I have a cake?
B: Yes, you can.
4. A: Can I have some noodles?
B: Yes, you can.
5. A: Can I have some eggs?
B: No, you can’t.
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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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