学进去-教育应平等而普惠
试题
类型:选择题
难度系数:0.65
所属科目:小学英语
Find the different words.(选出不同类的单词)
(_____)?1.?A. went???????   B. say??????????   C. missed?
(_____)?2.?A. can????????   B. will?????????   C. broken?
(_____)?3.?A. Xiamen????   B. Harbin???????   C. Beijing?
(_____)?4.?A. hope???????   B. wish?????????   C. can?
(_____)?5.?A. a lot of????   B. some????????   C. many
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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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