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学进去-教育应平等而普惠
试题
类型:匹配题
难度系数:0.64
所属科目:小学英语
根据<A>栏中的问句,在<B>栏中选出正确答语。
<A>                                       <B>
(   ) 1. How many books do you have?            A  I'm from the USA.
(   ) 2. How many ducks can you see?            B  He's Mr. Black.
(   ) 3. Can I have a banana?                 C  I have sixteen.
(   ) 4. Where are you from?                    D  I can see twelve.
(   ) 5. Who's that man?                        E  Sure. Here you are.
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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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