学进去-教育应平等而普惠
试题
类型:排序题
难度系数:0.65
所属科目:小学英语
(        ) Li Ming has breakfast at 7:20 in the morning.
(        ) Li Ming walks to school. At 8:10 classes begin.
(        ) Li Ming gets up at 7:00 in the morning. Then he brushes his teeth.
(        ) Li Ming plays sports with his friends. At 5:10 he goes home.
(        ) Li Ming has three lessons in the morning and two in the afternoon.
(        ) Li Ming does his homework at 7:30 in the evening. He goes to bed at 9:30.
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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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