学进去-教育应平等而普惠
试题
类型:匹配题
难度系数:0.85
所属科目:小学英语
动动脑。(选择相应的答语,只填序号)
()1. Where is he ?
()2. Here you are.
()3. Do you want some rice?
()4. Are you eating an orange ?
()5. Where is the bird?
A.t is in the tree.
B.Yes .
C.No , I don’t want some rice.
D.He is in the room.
 
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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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