学进去-教育应平等而普惠
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类型:选内容补全对话
难度系数:0.65
所属科目:小学英语

Hello, I am Peppa Pig. I often 1. up at 6:30 a.m. Yesterday I got up at 7:00 a.m. I 2. the beach with my friends to have a picnic. It was sunny and warm. I brought some 3.. George brought a few bottles of milk. Rebecca brought some carrots. Richard brought some cakes and bread. We 4. games at the beach after picnic. Then we went swimming in the sea. We 5. a good time.

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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

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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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